����JFIFXX�����    $.' ",#(7),01444'9=82<.342  2!!22222222222222222222222222222222222222222222222222����"��4�� ���,�PG"Z_�4�˷����kjز�Z�,F+��_z�,�© �����zh6�٨�ic�fu���#ډb���_�N�?��wQ���5-�~�I���8����TK<5o�Iv-�����k�_U_�����~b�M��d����Ӝ�U�Hh��?]��E�w��Q���k�{��_}qFW7HTՑ��Y��F�?_�'ϔ��_�Ջt��=||I ��6�έ"�����D���/[�k�9���Y�8ds|\���Ҿp6�Ҵ���]��.����6�z<�v��@]�i%��$j��~�g��J>��no����pM[me�i$[����s�o�ᘨ�˸ nɜG-�ĨU�ycP�3.DB�li�;��hj���x7Z^�N�h������N3u{�:j�x�힞��#M&��jL P@_���� P��&��o8������9�����@Sz6�t7#O�ߋ �s}Yf�T���lmr����Z)'N��k�۞p����w\�Tȯ?�8`�O��i{wﭹW�[�r�� ��Q4F�׊���3m&L�=��h3����z~��#�\�l :�F,j@�� ʱ�wQT����8�"kJO���6�֚l����}���R�>ډK���]��y����&����p�}b��;N�1�m�r$�|��7�>e�@B�TM*-iH��g�D�)� E�m�|�ؘbҗ�a��Ҿ����t4���o���G��*oCN�rP���Q��@z,|?W[0�����:�n,jWiE��W��$~/�hp\��?��{(�0���+�Y8rΟ�+����>S-S����VN;�}�s?.����� w�9��˟<���Mq4�Wv'��{)0�1mB��V����W[�����8�/<� �%���wT^�5���b��)iM� pg�N�&ݝ��VO~�q���u���9� ����!��J27����$O-���! �:�%H��� ـ����y�ΠM=t{!S�� oK8������t<����è:a������[�����ա�H���~��w��Qz`�po�^ ����Q��n� �,uu�C�$ ^���,������8�#��:�6��e�|~���!�3�3.�\0��q��o�4`.|� ����y�Q�`~;�d�ׯ,��O�Zw�������`73�v�܋�<���Ȏ�� ـ4k��5�K�a�u�=9Yd��$>x�A�&�� j0� ���vF��� Y�|�y��� ~�6�@c��1vOp�Ig����4��l�OD���L����� R���c���j�_�uX6��3?nk��Wy�f;^*B� ��@�~a�`��Eu������+���6�L��.ü>��}y���}_�O�6�͐�:�YrG�X��kG�����l^w���~㒶sy��Iu�!� W ��X��N�7BV��O��!X�2����wvG�R�f�T#�����t�/?���%8�^�W�aT��G�cL�M���I��(J����1~�8�?aT ���]����AS�E��(��*E}� 2��#I/�׍qz��^t�̔���b�Yz4x���t�){ OH��+(E��A&�N�������XT��o��"�XC��'���)}�J�z�p� ��~5�}�^����+�6����w��c��Q�|Lp�d�H��}�(�.|����k��c4^�"�����Z?ȕ ��a<�L�!039C� �Eu�C�F�Ew�ç ;�n?�*o���B�8�bʝ���'#Rqf���M}7����]����s2tcS{�\icTx;�\��7K���P���ʇ Z O-��~��c>"��?�������P��E��O�8��@�8��G��Q�g�a�Վ���󁶠�䧘��_%#r�>�1�z�a��eb��qcPѵ��n���#L��� =��׀t� L�7�`��V���A{�C:�g���e@�w1 Xp3�c3�ġ����p��M"'-�@n4���fG��B3�DJ�8[Jo�ߐ���gK)ƛ��$���� ���8�3�����+���� �����6�ʻ���� ���S�kI�*KZlT _`���?��K����QK�d����B`�s}�>���`��*�>��,*@J�d�oF*����弝��O}�k��s��]��y�ߘ��c1G�V���<=�7��7����6�q�PT��tXԀ�!9*4�4Tހ3XΛex�46���Y��D ����� �BdemDa����\�_l,��G�/���֌7���Y�](�xTt^%�GE�����4�}bT���ڹ�����;Y)���B�Q��u��>J/J �⮶.�XԄ��j�ݳ�+E��d ��r�5�_D�1 ��o�� �B�x�΢�#���<��W�����8���R6�@g�M�.��� dr�D��>(otU��@x=��~v���2� ӣ�d�oBd��3�eO�6�㣷�����ݜ6��6Y��Qz`��S��{���\P�~z m5{J/L��1������<�e�ͅPu�b�]�ϔ���'������f�b� Zpw��c`"��i���BD@:)ִ�:�]��hv�E�w���T�l��P���"Ju�}��وV J��G6��. J/�Qgl߭�e�����@�z�Zev2u�)]կ�����7x���s�M�-<ɯ�c��r�v�����@��$�ޮ}lk���a���'����>x��O\�ZFu>�����ck#��&:��`�$�ai�>2Δ����l���oF[h��lE�ܺ�Πk:)���`�� $[6�����9�����kOw�\|���8}������ބ:��񶐕��I�A1/�=�2[�,�!��.}gN#�u����b��� ~��݊��}34q����d�E��Lc��$��"�[q�U�硬g^��%B �z���r�pJ�ru%v\h1Y�ne`ǥ:g���pQM~�^�Xi� ��`S�:V29.�P���V�?B�k�� AEvw%�_�9C�Q����wKekPؠ�\�;Io d�{ ߞo�c1eP����\� `����E=���@K<�Y���eڼ�J���w����{av�F�'�M�@/J��+9p���|]�����Iw &`��8���&M�hg��[�{��Xj��%��Ӓ�$��(����ʹN���<>�I���RY���K2�NPlL�ɀ)��&e����B+ь����( � �JTx���_?EZ� }@ 6�U���뙢ط�z��dWI�n` D����噥�[��uV��"�G&Ú����2g�}&m��?ċ�"����Om#��������� ��{�ON��"S�X��Ne��ysQ���@Fn��Vg���dX�~nj�]J�<�K]:��FW��b�������62�=��5f����JKw��bf�X�55��~J �%^����:�-�QIE��P��v�nZum� z � ~ə ���� ���ة����;�f��\v���g�8�1��f24;�V���ǔ�)����9���1\��c��v�/'Ƞ�w�������$�4�R-��t���� e�6�/�ġ �̕Ecy�J���u�B���<�W�ַ~�w[B1L۲�-JS΂�{���΃������A��20�c#��@ 0!1@AP"#2Q`$3V�%45a6�FRUq��� ����^7ׅ,$n�������+��F�`��2X'��0vM��p�L=������5��8������u�p~���.�`r�����\���O��,ư�0oS ��_�M�����l���4�kv\JSd���x���SW�<��Ae�IX����������$I���w�:S���y���›R��9�Q[���,�5�;�@]�%���u�@ *ro�lbI �� ��+���%m:�͇ZV�����u�̉����θau<�fc�.����{�4Ա� �Q����*�Sm��8\ujqs]{kN���)qO�y�_*dJ�b�7���yQqI&9�ԌK!�M}�R�;������S�T���1���i[U�ɵz�]��U)V�S6���3$K{�ߊ<�(� E]Զ[ǼENg�����'�\?#)Dkf��J���o��v���'�%ƞ�&K�u�!��b�35LX�Ϸ��63$K�a�;�9>,R��W��3�3� d�JeTYE.Mϧ��-�o�j3+y��y^�c�������VO�9NV\nd�1 ��!͕_)a�v;����թ�M�lWR1��)El��P;��yوÏ�u 3�k�5Pr6<�⒲l�!˞*��u־�n�!�l:����UNW ��%��Chx8vL'��X�@��*��)���̮��ˍ��� ���D-M�+J�U�kvK����+�x8��cY������?�Ԡ��~3mo��|�u@[XeY�C�\Kp�x8�oC�C�&����N�~3-H���� ��MX�s�u<`���~"WL��$8ξ��3���a�)|:@�m�\���^�`�@ҷ)�5p+��6���p�%i)P M���ngc�����#0Aruz���RL+xSS?���ʮ}()#�t��mˇ!��0}}y����<�e� �-ή�Ԩ��X������ MF���ԙ~l L.3���}�V뽺�v�����멬��Nl�)�2����^�Iq��a��M��qG��T�����c3#������3U�Ǎ���}��לS�|qa��ڃ�+���-��2�f����/��bz��ڐ�� �ݼ[2�ç����k�X�2�* �Z�d���J�G����M*9W���s{��w���T��x��y,�in�O�v��]���n����P�$�JB@=4�OTI�n��e�22a\����q�d���%�$��(���:���: /*�K[PR�fr\nڙdN���F�n�$�4�[�� U�zƶ����� �mʋ���,�ao�u 3�z� �x��Kn����\[��VFmbE;�_U��&V�Gg�]L�۪&#n%�$ɯ�dG���D�TI=�%+AB�Ru#��b4�1�»x�cs�YzڙJG��f��Il��d�eF'T� iA��T���uC�$����Y��H?����[!G`}���ͪ� �纤Hv\������j�Ex�K���!���OiƸ�Yj�+u-<���'q����uN�*�r\��+�]���<�wOZ.fp�ێ��,-*)V?j-kÊ#�`�r��dV����(�ݽBk�����G�ƛk�QmUڗe��Z���f}|����8�8��a���i��3'J�����~G_�^���d�8w������ R�`(�~�.��u���l�s+g�bv���W���lGc}��u���afE~1�Ue������Z�0�8�=e�� f@/�jqEKQQ�J��oN��J���W5~M>$6�Lt�;$ʳ{���^��6�{����v6���ķܰg�V�cnn �~z�x�«�,2�u�?cE+Ș�H؎�%�Za�)���X>uW�Tz�Nyo����s���FQƤ��$��*�&�LLXL)�1�" L��eO��ɟ�9=���:t��Z���c��Ž���Y?�ӭV�wv�~,Y��r�ۗ�|�y��GaF�����C�����.�+� ���v1���fήJ�����]�S��T��B��n5sW}y�$��~z�'�c ��8 ��� ,! �p��VN�S��N�N�q��y8z˱�A��4��*��'������2n<�s���^ǧ˭P�Jޮɏ�U�G�L�J�*#��<�V��t7�8����TĜ>��i}K%,���)[��z�21z ?�N�i�n1?T�I�R#��m-�����������������1����lA�`��fT5+��ܐ�c�q՝��ʐ��,���3�f2U�եmab��#ŠdQ�y>\��)�SLY����w#��.���ʑ�f��� ,"+�w�~�N�'�c�O�3F�������N<���)j��&��,-� �љ���֊�_�zS���TǦ����w�>��?�������n��U仆�V���e�����0���$�C�d���rP �m�׈e�Xm�Vu� �L��.�bֹ��� �[Դaզ���*��\y�8�Է:�Ez\�0�Kq�C b��̘��cө���Q��=0Y��s�N��S.���3.���O�o:���#���v7�[#߫ ��5�܎�L���Er4���9n��COWlG�^��0k�%<���ZB���aB_���������'=��{i�v�l�$�uC���mƎҝ{�c㱼�y]���W�i ��ߧc��m�H� m�"�"�����;Y�ߝ�Z�Ǔ�����:S#��|}�y�,/k�Ld� TA�(�AI$+I3��;Y*���Z��}|��ӧO��d�v��..#:n��f>�>���ȶI�TX��� 8��y����"d�R�|�)0���=���n4��6ⲑ�+��r<�O�܂~zh�z����7ܓ�HH�Ga롏���nCo�>������a ���~]���R���̲c?�6(�q�;5%� |�uj�~z8R=X��I�V=�|{v�Gj\gc��q����z�؋%M�ߍ����1y��#��@f^���^�>N�����#x#۹��6�Y~�?�dfPO��{��P�4��V��u1E1J �*|���%���JN��`eWu�zk M6���q t[�� ��g�G���v��WIG��u_ft����5�j�"�Y�:T��ɐ���*�;� e5���4����q$C��2d�}���� _S�L#m�Yp��O�.�C�;��c����Hi#֩%+) �Ӎ��ƲV���SYź��g |���tj��3�8���r|���V��1#;.SQ�A[���S������#���`n�+���$��$I �P\[�@�s��(�ED�z���P��])8�G#��0B��[ى��X�II�q<��9�~[Z멜�Z�⊔IWU&A>�P~�#��dp<�?����7���c��'~���5 ��+$���lx@�M�dm��n<=e�dyX��?{�|Aef ,|n3�<~z�ƃ�uۧ�����P��Y,�ӥQ�*g�#먙R�\���;T��i,��[9Qi歉����c>]9�� ��"�c��P�� �Md?٥��If�ت�u��k��/����F��9�c*9��Ǎ:�ØF���z�n*�@|I�ށ9����N3{'��[�'ͬ�Ҳ4��#}��!�V� Fu��,�,mTIk���v C�7v���B�6k�T9��1�*l� '~��ƞF��lU��'�M ����][ΩũJ_�{�i�I�n��$���L�� j��O�dx�����kza۪��#�E��Cl����x˘�o�����V���ɞ�ljr��)�/,�߬h�L��#��^��L�ф�,íMƁe�̩�NB�L�����iL����q�}��(��q��6IçJ$�W�E$��:������=#����(�K�B����zђ <��K(�N�۫K�w��^O{!����)�H���>x�������lx�?>Պ�+�>�W���,Ly!_�D���Ō�l���Q�!�[ �S����J��1��Ɛ�Y}��b,+�Lo�x�ɓ)����=�y�oh�@�꥟/��I��ѭ=��P�y9��� �ۍYӘ�e+�p�Jnϱ?V\SO%�(�t� ���=?MR�[Ș�����d�/ ��n�l��B�7j� ��!�;ӥ�/�[-���A�>�dN�sLj ��,ɪv��=1c�.SQ�O3�U���ƀ�ܽ�E����������̻��9G�ϷD�7(�}��Ävӌ\�y�_0[w ���<΍>����a_��[0+�L��F.�޺��f�>oN�T����q;���y\��bՃ��y�jH�<|q-eɏ�_?_9+P���Hp$�����[ux�K w�Mw��N�ی'$Y2�=��q���KB��P��~������Yul:�[<����F1�2�O���5=d����]Y�sw:���Ϯ���E��j,_Q��X��z`H1,#II ��d�wr��P˂@�ZJV����y$�\y�{}��^~���[:N����ߌ�U�������O��d�����ؾe��${p>G��3c���Ė�lʌ�� ת��[��`ϱ�-W����dg�I��ig2��� ��}s ��ؤ(%#sS@���~���3�X�nRG�~\jc3�v��ӍL��M[JB�T��s3}��j�Nʖ��W����;7��ç?=X�F=-�=����q�ߚ���#���='�c��7���ڑW�I(O+=:uxq�������������e2�zi+�kuG�R��������0�&e�n���iT^J����~\jy���p'dtG��s����O��3����9* �b#Ɋ�� p������[Bws�T�>d4�ۧs���nv�n���U���_�~,�v����ƜJ1��s�� �QIz��)�(lv8M���U=�;����56��G���s#�K���MP�=��LvyGd��}�VwWBF�'�à �?MH�U�g2�� ����!�p�7Q��j��ڴ����=��j�u��� Jn�A s���uM������e��Ɔ�Ҕ�!)'��8Ϣ�ٔ��ޝ(��Vp���צ֖d=�IC�J�Ǡ{q������kԭ�߸���i��@K����u�|�p=..�*+����x�����z[Aqġ#s2a�Ɗ���RR�)*HRsi�~�a &f��M��P����-K�L@��Z��Xy�'x�{}��Zm+���:�)�) IJ�-i�u���� ���ܒH��'�L(7�y�GӜq���� j��� 6ߌg1�g�o���,kر���tY�?W,���p���e���f�OQS��!K�۟cҒA�|ս�j�>��=⬒��˧L[�� �߿2JaB~R��u�:��Q�] �0H~���]�7��Ƽ�I���(}��cq '�ήET���q�?f�ab���ӥvr� �)o��-Q��_'����ᴎo��K������;��V���o��%���~OK ����*��b�f:���-ťIR��`B�5!RB@���ï�� �u �̯e\�_U�_������� g�ES��3�������QT��a����x����U<~�c?�*�#]�MW,[8O�a�x��]�1bC|踤�P��lw5V%�)�{t�<��d��5���0i�XSU��m:��Z�┵�i�"��1�^B�-��P�hJ��&)O��*�D��c�W��vM��)����}���P��ܗ-q����\mmζZ-l@�}��a��E�6��F�@��&Sg@���ݚ�M����� ȹ 4����#p�\H����dYDo�H���"��\��..R�B�H�z_�/5˘����6��KhJR��P�mƶi�m���3�,#c�co��q�a)*Pt����R�m�k�7x�D�E�\Y�閣_X�<���~�)���c[[�BP����6�Yq���S��0����%_����;��Àv�~�| VS؇ ��'O0��F0��\���U�-�d@�����7�SJ*z��3n��y��P����O���������m�~�P�3|Y��ʉr#�C�<�G~�.,! ���bqx���h~0=��!ǫ�jy����l�O,�[B��~��|9��ٱ����Xly�#�i�B��g%�S��������tˋ���e���ې��\[d�t)��.+u�|1 ������#�~Oj����hS�%��i.�~X���I�H�m��0n���c�1uE�q��cF�RF�o���7� �O�ꮧ� ���ۛ{��ʛi5�rw?׌#Qn�TW��~?y$��m\�\o����%W� ?=>S�N@�� �Ʈ���R����N�)�r"C�:��:����� �����#��qb��Y�. �6[��2K����2u�Ǧ�HYR��Q�MV��� �G�$��Q+.>�����nNH��q�^��� ����q��mM��V��D�+�-�#*�U�̒ ���p욳��u:�������IB���m���PV@O���r[b= �� ��1U�E��_Nm�yKbN�O���U�}�the�`�|6֮P>�\2�P�V���I�D�i�P�O;�9�r�mAHG�W�S]��J*�_�G��+kP�2����Ka�Z���H�'K�x�W�MZ%�O�YD�Rc+o��?�q��Ghm��d�S�oh�\�D�|:W������UA�Qc yT�q������~^�H��/��#p�CZ���T�I�1�ӏT����4��"�ČZ�����}��`w�#�*,ʹ�� ��0�i��課�Om�*�da��^gJ݅{���l�e9uF#T�ֲ��̲�ٞC"�q���ߍ ոޑ�o#�XZTp����@ o�8��(jd��xw�]�,f���`~�|,s��^����f�1���t��|��m�򸄭/ctr��5s��7�9Q�4�H1꠲BB@l9@���C�����+�wp�xu�£Yc�9��?`@#�o�mH�s2��)�=��2�.�l����jg�9$�Y�S�%*L������R�Y������7Z���,*=�䷘$�������arm�o�ϰ���UW.|�r�uf����IGw�t����Zwo��~5 ��YյhO+=8fF�)�W�7�L9lM�̘·Y���֘YLf�큹�pRF���99.A �"wz��=E\Z���'a� 2��Ǚ�#;�'}�G���*��l��^"q��+2FQ� hj��kŦ��${���ޮ-�T�٭cf�|�3#~�RJ����t��$b�(R��(����r���dx� >U b�&9,>���%E\� Ά�e�$��'�q't��*�א���ެ�b��-|d���SB�O�O��$�R+�H�)�܎�K��1m`;�J�2�Y~9��O�g8=vqD`K[�F)k�[���1m޼c��n���]s�k�z$@��)!I �x՝"v��9=�ZA=`Ɠi �:�E��)`7��vI��}d�YI�_ �o�:ob���o ���3Q��&D&�2=�� �Ά��;>�h����y.*ⅥS������Ӭ�+q&����j|UƧ����}���J0��WW< ۋS�)jQR�j���Ư��rN)�Gű�4Ѷ(�S)Ǣ�8��i��W52���No˓� ۍ%�5brOn�L�;�n��\G����=�^U�dI���8$�&���h��'���+�(������cȁ߫k�l��S^���cƗjԌE�ꭔ��gF���Ȓ��@���}O���*;e�v�WV���YJ\�]X'5��ղ�k�F��b 6R�o՜m��i N�i����>J����?��lPm�U��}>_Z&�KK��q�r��I�D�Չ~�q�3fL�:S�e>���E���-G���{L�6p�e,8��������QI��h��a�Xa��U�A'���ʂ���s�+טIjP�-��y�8ۈZ?J$��W�P� ��R�s�]��|�l(�ԓ��sƊi��o(��S0��Y� 8�T97.�����WiL��c�~�dxc�E|�2!�X�K�Ƙਫ਼�$((�6�~|d9u+�qd�^3�89��Y�6L�.I�����?���iI�q���9�)O/뚅����O���X��X�V��ZF[�یgQ�L��K1���RҖr@v�#��X�l��F���Нy�S�8�7�kF!A��sM���^rkp�jP�DyS$N���q��nxҍ!U�f�!eh�i�2�m���`�Y�I�9r�6� �TF���C}/�y�^���Η���5d�'��9A-��J��>{�_l+�`��A���[�'��յ�ϛ#w:݅�%��X�}�&�PSt�Q�"�-��\縵�/����$Ɨh�Xb�*�y��BS����;W�ջ_mc�����vt?2}1�;qS�d�d~u:2k5�2�R�~�z+|HE!)�Ǟl��7`��0�<�,�2*���Hl-��x�^����'_TV�gZA�'j� ^�2Ϊ��N7t�����?w�� �x1��f��Iz�C-Ȗ��K�^q�;���-W�DvT�7��8�Z�������� hK�(P:��Q- �8�n�Z���܃e貾�<�1�YT<�,�����"�6{/ �?�͟��|1�:�#g��W�>$����d��J��d�B��=��jf[��%rE^��il:��B���x���Sּ�1հ��,�=��*�7 fcG��#q� �eh?��2�7�����,�!7x��6�n�LC�4x��},Geǝ�tC.��vS �F�43��zz\��;QYC,6����~;RYS/6���|2���5���v��T��i����������mlv��������&� �nRh^ejR�LG�f���? �ۉҬܦƩ��|��Ȱ����>3����!v��i�ʯ�>�v��オ�X3e���_1z�Kȗ\<������!�8���V��]��?b�k41�Re��T�q��mz��TiOʦ�Z��Xq���L������q"+���2ۨ��8}�&N7XU7Ap�d�X��~�׿��&4e�o�F��� �H����O���č�c�� 懴�6���͉��+)��v;j��ݷ�� �UV�� i��� j���Y9GdÒJ1��詞�����V?h��l����l�cGs�ځ�������y�Ac�����\V3�? �� ܙg�>qH�S,�E�W�[�㺨�uch�⍸�O�}���a��>�q�6�n6����N6�q������N ! 1AQaq�0@����"2BRb�#Pr���3C`��Scst���$4D���%Td�� ?���N����a��3��m���C���w��������xA�m�q�m���m������$����4n淿t'��C"w��zU=D�\R+w�p+Y�T�&�պ@��ƃ��3ޯ?�Aﶂ��aŘ���@-�����Q�=���9D��ռ�ѻ@��M�V��P��܅�G5�f�Y<�u=,EC)�<�Fy'�"�&�չ�X~f��l�KԆV��?�� �W�N����=(� �;���{�r����ٌ�Y���h{�١������jW����P���Tc�����X�K�r��}���w�R��%��?���E��m�� �Y�q|����\lEE4���r���}�lsI�Y������f�$�=�d�yO����p�����yBj8jU�o�/�S��?�U��*������ˍ�0������u�q�m [�?f����a�� )Q�>����6#������� ?����0UQ����,IX���(6ڵ[�DI�MNލ�c&���υ�j\��X�R|,4��� j������T�hA�e��^���d���b<����n�� �즇�=!���3�^�`j�h�ȓr��jẕ�c�,ٞX����-����a�ﶔ���#�$��]w�O��Ӫ�1y%��L�Y<�wg#�ǝ�̗`�x�xa�t�w��»1���o7o5��>�m뭛C���Uƃߜ}�C���y1Xνm�F8�jI���]����H���ۺиE@I�i;r�8ӭ����V�F�Շ| ��&?�3|x�B�MuS�Ge�=Ӕ�#BE5G�����Y!z��_e��q�р/W>|-�Ci߇�t�1ޯќd�R3�u��g�=0 5��[?�#͏��q�cf���H��{ ?u�=?�?ǯ���}Z��z���hmΔ�BFTW�����<�q�(v� ��!��z���iW]*�J�V�z��gX֧A�q�&��/w���u�gYӘa���; �i=����g:��?2�dž6�ى�k�4�>�Pxs����}������G�9��3 ���)gG�R<>r h�$��'nc�h�P��Bj��J�ҧH� -��N1���N��?��~��}-q!=��_2hc�M��l�vY%UE�@|�v����M2�.Y[|y�"Eï��K�ZF,�ɯ?,q�?v�M 80jx�"�;�9vk�����+ ֧�� �ȺU��?�%�vcV��mA�6��Qg^M����A}�3�nl� QRN�l8�kkn�'�����(��M�7m9و�q���%ޟ���*h$Zk"��$�9��: �?U8�Sl��,,|ɒ��xH(ѷ����Gn�/Q�4�P��G�%��Ա8�N��!� �&�7�;���eKM7�4��9R/%����l�c>�x;������>��C�:�����t��h?aKX�bhe�ᜋ^�$�Iհ �hr7%F$�E��Fd���t��5���+�(M6�t����Ü�UU|zW�=a�Ts�Tg������dqP�Q����b'�m���1{|Y����X�N��b �P~��F^F:����k6�"�j!�� �I�r�`��1&�-$�Bevk:y���#yw��I0��x��=D�4��tU���P�ZH��ڠ底taP��6����b>�xa����Q�#� WeF��ŮNj�p�J* mQ�N����*I�-*�ȩ�F�g�3 �5��V�ʊ�ɮ�a��5F���O@{���NX��?����H�]3��1�Ri_u��������ѕ�� ����0��� F��~��:60�p�͈�S��qX#a�5>���`�o&+�<2�D����: �������ڝ�$�nP���*)�N�|y�Ej�F�5ټ�e���ihy�Z �>���k�bH�a�v��h�-#���!�Po=@k̆IEN��@��}Ll?j�O������߭�ʞ���Q|A07x���wt!xf���I2?Z��<ץ�T���cU�j��]��陎Ltl �}5�ϓ��$�,��O�mˊ�;�@O��jE��j(�ا,��LX���LO���Ц�90�O �.����a��nA���7������j4 ��W��_ٓ���zW�jcB������y՗+EM�)d���N�g6�y1_x��p�$Lv:��9�"z��p���ʙ$��^��JԼ*�ϭ����o���=x�Lj�6�J��u82�A�H�3$�ٕ@�=Vv�]�'�qEz�;I˼��)��=��ɯ���x �/�W(V���p�����$ �m�������u�����񶤑Oqˎ�T����r��㠚x�sr�GC��byp�G��1ߠ�w e�8�$⿄����/�M{*}��W�]˷.�CK\�ުx���/$�WPw���r� |i���&�}�{�X� �>��$-��l���?-z���g����lΆ���(F���h�vS*���b���߲ڡn,|)mrH[���a�3�ר�[1��3o_�U�3�TC�$��(�=�)0�kgP���� ��u�^=��4 �WYCҸ:��vQ�ר�X�à��tk�m,�t*��^�,�}D*� �"(�I��9R����>`�`��[~Q]�#af��i6l��8���6�:,s�s�N6�j"�A4���IuQ��6E,�GnH��zS�HO�uk�5$�I�4��ؤ�Q9�@��C����wp�BGv[]�u�Ov���0I4���\��y�����Q�Ѹ��~>Z��8�T��a��q�ޣ;z��a���/��S��I:�ܫ_�|������>=Z����8:�S��U�I�J��"IY���8%b8���H��:�QO�6�;7�I�S��J��ҌAά3��>c���E+&jf$eC+�z�;��V����� �r���ʺ������my�e���aQ�f&��6�ND��.:��NT�vm�<- u���ǝ\MvZY�N�NT��-A�>jr!S��n�O 1�3�Ns�%�3D@���`������ܟ 1�^c<���� �a�ɽ�̲�Xë#�w�|y�cW�=�9I*H8�p�^(4���՗�k��arOcW�tO�\�ƍR��8����'�K���I�Q�����?5�>[�}��yU�ײ -h��=��% q�ThG�2�)���"ו3]�!kB��*p�FDl�A���,�eEi�H�f�Ps�����5�H:�Փ~�H�0Dت�D�I����h�F3�������c��2���E��9�H��5�zԑ�ʚ�i�X�=:m�xg�hd(�v����׊�9iS��O��d@0ڽ���:�p�5�h-��t�&���X�q�ӕ,��ie�|���7A�2���O%P��E��htj��Y1��w�Ѓ!����  ���� ࢽ��My�7�\�a�@�ţ�J �4�Ȼ�F�@o�̒?4�wx��)��]�P��~�����u�����5�����7X ��9��^ܩ�U;Iꭆ 5 �������eK2�7(�{|��Y׎ �V��\"���Z�1� Z�����}��(�Ǝ"�1S���_�vE30>���p;� ΝD��%x�W�?W?v����o�^V�i�d��r[��/&>�~`�9Wh��y�;���R��� ;;ɮT��?����r$�g1�K����A��C��c��K��l:�'��3 c�ﳯ*"t8�~l��)���m��+U,z��`(�>yJ�?����h>��]��v��ЍG*�{`��;y]��I�T� ;c��NU�fo¾h���/$���|NS���1�S�"�H��V���T���4��uhǜ�]�v;���5�͠x��'C\�SBpl���h}�N����� A�Bx���%��ޭ�l��/����T��w�ʽ]D�=����K���ž�r㻠l4�S�O?=�k �M:� ��c�C�a�#ha���)�ѐxc�s���gP�iG��{+���x���Q���I= �� z��ԫ+ �8"�k�ñ�j=|����c ��y��CF��/��*9ж�h{ �?4�o� ��k�m�Q�N�x��;�Y��4膚�a�w?�6�>e]�����Q�r�:����g�,i"�����ԩA�*M�<�G��b�if��l^M��5� �Ҩ�{����6J��ZJ�����P�*�����Y���ݛu�_4�9�I8�7���������,^ToR���m4�H��?�N�S�ѕw��/S��甍�@�9H�S�T��t�ƻ���ʒU��*{Xs�@����f�����֒Li�K{H�w^���������Ϥm�tq���s� ���ք��f:��o~s��g�r��ט� �S�ѱC�e]�x���a��) ���(b-$(�j>�7q�B?ӕ�F��hV25r[7 Y� }L�R��}����*sg+��x�r�2�U=�*'WS��ZDW]�WǞ�<��叓���{�$�9Ou4��y�90-�1�'*D`�c�^o?(�9��u���ݐ��'PI&� f�Jݮ�������:wS����jfP1F:X �H�9dԯ���˝[�_54 �}*;@�ܨ�� ð�yn�T���?�ןd�#���4rG�ͨ��H�1�|-#���Mr�S3��G�3�����)�.᧏3v�z֑��r����$G"�`j �1t��x0<Ɔ�Wh6�y�6��,œ�Ga��gA����y��b��)��h�D��ß�_�m��ü �gG;��e�v��ݝ�nQ� ��C����-�*��o���y�a��M��I�>�<���]obD��"�:���G�A��-\%LT�8���c�)��+y76���o�Q�#*{�(F�⽕�y����=���rW�\p���۩�c���A���^e6��K������ʐ�cVf5$�'->���ՉN"���F�"�UQ@�f��Gb~��#�&�M=��8�ט�JNu9��D��[̤�s�o�~������ G��9T�tW^g5y$b��Y'��س�Ǵ�=��U-2 #�MC�t(�i� �lj�@Q 5�̣i�*�O����s�x�K�f��}\��M{E�V�{�υ��Ƈ�����);�H����I��fe�Lȣr�2��>��W�I�Ȃ6������i��k�� �5�YOxȺ����>��Y�f5'��|��H+��98pj�n�.O�y�������jY��~��i�w'������l�;�s�2��Y��:'lg�ꥴ)o#'Sa�a�K��Z� �m��}�`169�n���"���x��I ��*+� }F<��cГ���F�P�������ֹ*�PqX�x۩��,� ��N�� �4<-����%����:��7����W���u�`����� $�?�I��&����o��o��`v�>��P��"��l���4��5'�Z�gE���8���?��[�X�7(��.Q�-��*���ތL@̲����v��.5���[��=�t\+�CNܛ��,g�SQnH����}*F�G16���&:�t��4ُ"A��̣��$�b �|����#rs��a�����T�� ]�<�j��BS�('$�ɻ� �wP;�/�n��?�ݜ��x�F��yUn�~mL*-�������Xf�wd^�a�}��f�,=t�׵i�.2/wpN�Ep8�OР���•��R�FJ� 55TZ��T �ɭ�<��]��/�0�r�@�f��V��V����Nz�G��^���7hZi����k��3�,kN�e|�vg�1{9]_i��X5y7� 8e]�U����'�-2,���e"����]ot�I��Y_��n�(JҼ��1�O ]bXc���Nu�No��pS���Q_���_�?i�~�x h5d'�(qw52] ��'ޤ�q��o1�R!���`ywy�A4u���h<קy���\[~�4�\ X�Wt/� 6�����n�F�a8��f���z �3$�t(���q��q�x��^�XWeN'p<-v�!�{�(>ӽDP7��ո0�y)�e$ٕv�Ih'Q�EA�m*�H��RI��=:��� ���4牢) �%_iN�ݧ�l]� �Nt���G��H�L��� ɱ�g<���1V�,�J~�ٹ�"K��Q�� 9�HS�9�?@��k����r�;we݁�]I�!{ �@�G�[�"��`���J:�n]�{�cA�E����V��ʆ���#��U9�6����j�#Y�m\��q�e4h�B�7��C�������d<�?J����1g:ٳ���=Y���D�p�ц� ׈ǔ��1�]26؜oS�'��9�V�FVu�P�h�9�xc�oq�X��p�o�5��Ա5$�9W�V(�[Ak�aY錎qf;�'�[�|���b�6�Ck��)��#a#a˙��8���=äh�4��2��C��4tm^ �n'c���]GQ$[Wҿ��i���vN�{Fu ��1�gx��1┷���N�m��{j-,��x�� Ūm�ЧS�[�s���Gna���䑴�� x�p 8<������97�Q���ϴ�v�aϚG��Rt�Һ׈�f^\r��WH�JU�7Z���y)�vg=����n��4�_)y��D'y�6�]�c�5̪�\� �PF�k����&�c;��cq�$~T�7j ���nç]�<�g ":�to�t}�159�<�/�8������m�b�K#g'I'.W�����6��I/��>v��\�MN��g���m�A�yQL�4u�Lj�j9��#44�t��l^�}L����n��R��!��t��±]��r��h6ٍ>�yҏ�N��fU�� ���� Fm@�8}�/u��jb9������he:A�y�ծw��GpΧh�5����l}�3p468��)U��d��c����;Us/�֔�YX�1�O2��uq�s��`hwg�r~�{ R��mhN��؎*q 42�*th��>�#���E����#��Hv�O����q�}�����6�e��\�,Wk�#���X��b>��p}�դ��3���T5��†��6��[��@�P�y*n��|'f�֧>�lư΂�̺����SU�'*�q�p�_S�����M�� '��c�6�����m�� ySʨ;M��r���Ƌ�m�Kxo,���Gm�P��A�G�:��i��w�9�}M(�^�V��$ǒ�ѽ�9���|���� �a����J�SQ�a���r�B;����}���ٻ֢�2�%U���c�#�g���N�a�ݕ�'�v�[�OY'��3L�3�;,p�]@�S��{ls��X�'���c�jw�k'a�.��}�}&�� �dP�*�bK=ɍ!����;3n�gΊU�ߴmt�'*{,=SzfD� A��ko~�G�aoq�_mi}#�m�������P�Xhύ����mxǍ�΂���巿zf��Q���c���|kc�����?���W��Y�$���_Lv����l߶��c���`?����l�j�ݲˏ!V��6����U�Ђ(A���4y)H���p�Z_�x��>���e��R��$�/�`^'3qˏ�-&Q�=?��CFVR �D�fV�9��{�8g�������n�h�(P"��6�[�D���< E�����~0<@�`�G�6����Hг�cc�� �c�K.5��D��d�B���`?�XQ��2��ٿyqo&+�1^� DW�0�ꊩ���G�#��Q�nL3��c���������/��x ��1�1[y�x�პCW��C�c�UĨ80�m�e�4.{�m��u���I=��f�����0QRls9���f���������9���~f�����Ǩ��a�"@�8���ȁ�Q����#c�ic������G��$���G���r/$W�(��W���V�"��m�7�[m�A�m����bo��D� j����۳� l���^�k�h׽����� ��#� iXn�v��eT�k�a�^Y�4�BN��ĕ��0 !01@Q"2AaPq3BR������?���@4�Q�����T3,���㺠�W�[=JK�Ϟ���2�r^7��vc�:�9 �E�ߴ�w�S#d���Ix��u��:��Hp��9E!�� V 2;73|F��9Y���*ʬ�F��D����u&���y؟��^EA��A��(ɩ���^��GV:ݜDy�`��Jr29ܾ�㝉��[���E;Fzx��YG��U�e�Y�C���� ����v-tx����I�sם�Ę�q��Eb�+P\ :>�i�C'�;�����k|z�رn�y]�#ǿb��Q��������w�����(�r|ӹs��[�D��2v-%��@;�8<a���[\o[ϧw��I!��*0�krs)�[�J9^��ʜ��p1)� "��/_>��o��<1����A�E�y^�C��`�x1'ܣn�p��s`l���fQ��):�l����b>�Me�jH^?�kl3(�z:���1ŠK&?Q�~�{�ٺ�h�y���/�[��V�|6��}�KbX����mn[-��7�5q�94�������dm���c^���h� X��5��<�eޘ>G���-�}�دB�ޟ� ��|�rt�M��V+�]�c?�-#ڛ��^ǂ}���Lkr���O��u�>�-D�ry� D?:ޞ�U��ǜ�7�V��?瓮�"�#���r��չģVR;�n���/_� ؉v�ݶe5d�b9��/O��009�G���5n�W����JpA�*�r9�>�1��.[t���s�F���nQ� V 77R�]�ɫ8����_0<՜�IF�u(v��4��F�k�3��E)��N:��yڮe��P�`�1}�$WS��J�SQ�N�j�ٺ��޵�#l���ј(�5=��5�lǏmoW�v-�1����v,W�mn��߀$x�<����v�j(����c]��@#��1������Ǔ���o'��u+����;G�#�޸��v-lη��/(`i⣍Pm^���ԯ̾9Z��F��������n��1��� ��]�[��)�'������:�֪�W��FC����� �B9،!?���]��V��A�Վ�M��b�w��G F>_DȬ0¤�#�QR�[V��kz���m�w�"��9ZG�7'[��=�Q����j8R?�zf�\a�=��O�U����*oB�A�|G���2�54 �p��.w7� �� ��&������ξxGHp� B%��$g�����t�Џ򤵍z���HN�u�Я�-�'4��0��;_��3 !01"@AQa2Pq#3BR������?��ʩca��en��^��8���<�u#��m*08r��y�N"�<�Ѳ0��@\�p��� �����Kv�D��J8�Fҽ� �f�Y��-m�ybX�NP����}�!*8t(�OqѢ��Q�wW�K��ZD��Δ^e��!� ��B�K��p~�����e*l}z#9ң�k���q#�Ft�o��S�R����-�w�!�S���Ӥß|M�l޶V��!eˈ�8Y���c�ЮM2��tk���� ������J�fS����Ö*i/2�����n]�k�\���|4yX�8��U�P.���Ы[���l��@"�t�<������5�lF���vU�����W��W��;�b�cД^6[#7@vU�xgZv��F�6��Q,K�v��� �+Ъ��n��Ǣ��Ft���8��0��c�@�!�Zq s�v�t�;#](B��-�nῃ~���3g������5�J�%���O������n�kB�ĺ�.r��+���#�N$?�q�/�s�6��p��a����a��J/��M�8��6�ܰ"�*������ɗud"\w���aT(����[��F��U՛����RT�b���n�*��6���O��SJ�.�ij<�v�MT��R\c��5l�sZB>F��<7�;EA��{��E���Ö��1U/�#��d1�a�n.1ě����0�ʾR�h��|�R��Ao�3�m3 ��%�� ���28Q� ��y��φ���H�To�7�lW>����#i`�q���c����a��� �m,B�-j����݋�'mR1Ήt�>��V��p���s�0IbI�C.���1R�ea�����]H�6����������4B>��o��](��$B���m�����a�!=��?�B� K�Ǿ+�Ծ"�n���K��*��+��[T#�{E�J�S����Q�����s�5�:�U�\wĐ�f�3����܆&�)����I���Ԇw��E T�lrTf6Q|R�h:��[K�� �z��c֧�G�C��%\��_�a�84��HcO�bi��ؖV��7H �)*ģK~Xhչ0��4?�0��� �E<���}3���#���u�?�� ��|g�S�6ꊤ�|�I#Hڛ� �ա��w�X��9��7���Ŀ%�SL��y6č��|�F�a 8���b��$�sק�h���b9RAu7�˨p�Č�_\*w��묦��F ����4D~�f����|(�"m���NK��i�S�>�$d7SlA��/�²����SL��|6N�}���S�˯���g��]6��; �#�.��<���q'Q�1|KQ$�����񛩶"�$r�b:���N8�w@��8$�� �AjfG|~�9F ���Y��ʺ��Bwؒ������M:I岎�G��`s�YV5����6��A �b:�W���G�q%l�����F��H���7�������Fsv7��k�� 403WebShell
403Webshell
Server IP : 54.89.25.11  /  Your IP : 216.73.216.255
Web Server : Apache/2.4.7 (Ubuntu)
System : Linux ip-172-31-88-18 3.13.0-74-generic #118-Ubuntu SMP Thu Dec 17 22:52:10 UTC 2015 x86_64
User : www-data ( 33)
PHP Version : 5.5.9-1ubuntu4.24
Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
MySQL : ON  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : ON  |  Pkexec : ON
Directory :  /proc/self/root/var/www/html/kalemon/library/Custom/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /proc/self/root/var/www/html/kalemon/library/Custom/IP2Location.php
<?php

/*
 * Copyright (C) 2005-2016 IP2Location.com
 * All Rights Reserved
 *
 * This library is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; If not, see <http://www.gnu.org/licenses/>.
 *
 */

namespace Checkondispatch\Custom;

/**
 * IP2Location database class
 *
 */
class IP2Location {

  /**
   * Current module's version
   *
   * @var string
   */
  const VERSION = '7.2.5';

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Error field constants  ///////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Unsupported field message
   *
   * @var string
   */
  const FIELD_NOT_SUPPORTED = 'This parameter is unavailable in selected .BIN data file. Please upgrade.';

  /**
   * Unknown field message
   *
   * @var string
   */
  const FIELD_NOT_KNOWN = 'This parameter is inexistent. Please verify.';

  /**
   * Invalid IP address message
   *
   * @var string
   */
  const INVALID_IP_ADDRESS = 'Invalid IP address.';

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Field selection constants  ///////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Country code (ISO 3166-1 Alpha 2)
   *
   * @var int
   */
  const COUNTRY_CODE = 1;

  /**
   * Country name
   *
   * @var int
   */
  const COUNTRY_NAME = 2;

  /**
   * Region name
   *
   * @var int
   */
  const REGION_NAME = 3;

  /**
   * City name
   *
   * @var int
   */
  const CITY_NAME = 4;

  /**
   * Latitude
   *
   * @var int
   */
  const LATITUDE = 5;

  /**
   * Longitude
   *
   * @var int
   */
  const LONGITUDE = 6;

  /**
   * ISP name
   *
   * @var int
   */
  const ISP = 7;

  /**
   * Domain name
   *
   * @var int
   */
  const DOMAIN_NAME = 8;

  /**
   * Zip code
   *
   * @var int
   */
  const ZIP_CODE = 9;

  /**
   * Time zone
   *
   * @var int
   */
  const TIME_ZONE = 10;

  /**
   * Net speed
   *
   * @var int
   */
  const NET_SPEED = 11;

  /**
   * IDD code
   *
   * @var int
   */
  const IDD_CODE = 12;

  /**
   * Area code
   *
   * @var int
   */
  const AREA_CODE = 13;

  /**
   * Weather station code
   *
   * @var int
   */
  const WEATHER_STATION_CODE = 14;

  /**
   * Weather station name
   *
   * @var int
   */
  const WEATHER_STATION_NAME = 15;

  /**
   * Mobile Country Code
   *
   * @var int
   */
  const MCC = 16;

  /**
   * Mobile Network Code
   *
   * @var int
   */
  const MNC = 17;

  /**
   * Mobile carrier name
   *
   * @var int
   */
  const MOBILE_CARRIER_NAME = 18;

  /**
   * Elevation
   *
   * @var int
   */
  const ELEVATION = 19;

  /**
   * Usage type
   *
   * @var int
   */
  const USAGE_TYPE = 20;

  /**
   * Country name and code
   *
   * @var int
   */
  const COUNTRY = 101;

  /**
   * Latitude and Longitude
   *
   * @var int
   */
  const COORDINATES = 102;

  /**
   * IDD and area codes
   *
   * @var int
   */
  const IDD_AREA = 103;

  /**
   * Weather station name and code
   *
   * @var int
   */
  const WEATHER_STATION = 104;

  /**
   * MCC, MNC, and mobile carrier name
   *
   * @var int
   */
  const MCC_MNC_MOBILE_CARRIER_NAME = 105;

  /**
   * All fields at once
   *
   * @var int
   */
  const ALL = 1001;

  /**
   * Include the IP address of the looked up IP address
   *
   * @var int
   */
  const IP_ADDRESS = 1002;

  /**
   * Include the IP version of the looked up IP address
   *
   * @var int
   */
  const IP_VERSION = 1003;

  /**
   * Include the IP number of the looked up IP address
   *
   * @var int
   */
  const IP_NUMBER = 1004;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Exception code constants  ////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Generic exception code
   *
   * @var int
   */
  const EXCEPTION = 10000;

  /**
   * No shmop extension found
   *
   * @var int
   */
  const EXCEPTION_NO_SHMOP = 10001;

  /**
   * Failed to open shmop memory segment for reading
   *
   * @var int
   */
  const EXCEPTION_SHMOP_READING_FAILED = 10002;

  /**
   * Failed to open shmop memory segment for writing
   *
   * @var int
   */
  const EXCEPTION_SHMOP_WRITING_FAILED = 10003;

  /**
   * Failed to create shmop memory segment
   *
   * @var int
   */
  const EXCEPTION_SHMOP_CREATE_FAILED = 10004;

  /**
   * The specified database file was not found
   *
   * @var int
   */
  const EXCEPTION_DBFILE_NOT_FOUND = 10005;

  /**
   * Not enough memory to load database file
   *
   * @var int
   */
  const EXCEPTION_NO_MEMORY = 10006;

  /**
   * No candidate databse files found
   *
   * @var int
   */
  const EXCEPTION_NO_CANDIDATES = 10007;

  /**
   * Failed to open database file
   *
   * @var int
   */
  const EXCEPTION_FILE_OPEN_FAILED = 10008;

  /**
   * Failed to determine the current path
   *
   * @var int
   */
  const EXCEPTION_NO_PATH = 10009;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Caching method constants  ////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Directly read from the databse file
   *
   * @var int
   */
  const FILE_IO = 100001;

  /**
   * Read the whole database into a variable for caching
   *
   * @var int
   */
  const MEMORY_CACHE = 100002;

  /**
   * Use shared memory objects for caching
   *
   * @var int
   */
  const SHARED_MEMORY = 100003;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Shared memory constants  /////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Share memory segment's permissions (for creation)
   *
   * @var int
   */
  const SHM_PERMS = 0600;

  /**
   * Number of bytes to read/write at a time in order to load the shared memory cache (512k)
   *
   * @var int
   */
  const SHM_CHUNK_SIZE = 524288;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Static data  /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Column offset mapping
   *
   * Each entry contains an array mapping databse version (0--23) to offset within a record.
   * A value of 0 means the column is not present in the given database version.
   *
   * @access private
   * @static
   * @var array
   */
  private static $columns = [
      self::COUNTRY_CODE         => [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8],
      self::COUNTRY_NAME         => [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8],
      self::REGION_NAME          => [0, 0, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
      self::CITY_NAME            => [0, 0, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16],
      self::LATITUDE             => [0, 0, 0, 0, 20, 20, 0, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20],
      self::LONGITUDE            => [0, 0, 0, 0, 24, 24, 0, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24],
      self::ISP                  => [0, 12, 0, 20, 0, 28, 20, 28, 0, 32, 0, 36, 0, 36, 0, 36, 0, 36, 28, 36, 0, 36, 28, 36],
      self::DOMAIN_NAME          => [0, 0, 0, 0, 0, 0, 24, 32, 0, 36, 0, 40, 0, 40, 0, 40, 0, 40, 32, 40, 0, 40, 32, 40],
      self::ZIP_CODE             => [0, 0, 0, 0, 0, 0, 0, 0, 28, 28, 28, 28, 0, 28, 28, 28, 0, 28, 0, 28, 28, 28, 0, 28],
      self::TIME_ZONE            => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 28, 32, 32, 32, 28, 32, 0, 32, 32, 32, 0, 32],
      self::NET_SPEED            => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 44, 0, 44, 32, 44, 0, 44, 0, 44, 0, 44],
      self::IDD_CODE             => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 48, 0, 48, 0, 48, 36, 48, 0, 48],
      self::AREA_CODE            => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 52, 0, 52, 0, 52, 40, 52, 0, 52],
      self::WEATHER_STATION_CODE => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 56, 0, 56, 0, 56, 0, 56],
      self::WEATHER_STATION_NAME => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 60, 0, 60, 0, 60, 0, 60],
      self::MCC                  => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 64, 0, 64, 36, 64],
      self::MNC                  => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 68, 0, 68, 40, 68],
      self::MOBILE_CARRIER_NAME  => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 72, 0, 72, 44, 72],
      self::ELEVATION            => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 76, 0, 76],
      self::USAGE_TYPE           => [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 80],
  ];

  /**
   * Column name mapping
   *
   * @access private
   * @static
   * @var array
   */
  private static $names = [
      self::COUNTRY_CODE         => 'countryCode',
      self::COUNTRY_NAME         => 'countryName',
      self::REGION_NAME          => 'regionName',
      self::CITY_NAME            => 'cityName',
      self::LATITUDE             => 'latitude',
      self::LONGITUDE            => 'longitude',
      self::ISP                  => 'isp',
      self::DOMAIN_NAME          => 'domainName',
      self::ZIP_CODE             => 'zipCode',
      self::TIME_ZONE            => 'timeZone',
      self::NET_SPEED            => 'netSpeed',
      self::IDD_CODE             => 'iddCode',
      self::AREA_CODE            => 'areaCode',
      self::WEATHER_STATION_CODE => 'weatherStationCode',
      self::WEATHER_STATION_NAME => 'weatherStationName',
      self::MCC                  => 'mcc',
      self::MNC                  => 'mnc',
      self::MOBILE_CARRIER_NAME  => 'mobileCarrierName',
      self::ELEVATION            => 'elevation',
      self::USAGE_TYPE           => 'usageType',
      self::IP_ADDRESS           => 'ipAddress',
      self::IP_VERSION           => 'ipVersion',
      self::IP_NUMBER            => 'ipNumber',
  ];

  /**
   * Database names, in order of preference for file lookup
   *
   * @var array
   */
  private static $databases = [
      // IPv4 databases
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE-USAGETYPE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE-ELEVATION',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-NETSPEED-WEATHER',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-TIMEZONE-NETSPEED',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-ISP-DOMAIN',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN',
      'IP-COUNTRY-REGION-CITY-ISP-DOMAIN',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP',
      'IP-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE',
      'IP-COUNTRY-REGION-CITY-ISP',
      'IP-COUNTRY-REGION-CITY',
      'IP-COUNTRY-ISP',
      'IP-COUNTRY',
      // IPv6 databases
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION-USAGETYPE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE-USAGETYPE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE-ELEVATION',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE-ELEVATION',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER-MOBILE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN-MOBILE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE-WEATHER',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-NETSPEED-WEATHER',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED-AREACODE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-AREACODE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN-NETSPEED',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-TIMEZONE-NETSPEED',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE-ISP-DOMAIN',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-TIMEZONE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE-ISP-DOMAIN',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ZIPCODE',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP-DOMAIN',
      'IPV6-COUNTRY-REGION-CITY-ISP-DOMAIN',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE-ISP',
      'IPV6-COUNTRY-REGION-CITY-LATITUDE-LONGITUDE',
      'IPV6-COUNTRY-REGION-CITY-ISP',
      'IPV6-COUNTRY-REGION-CITY',
      'IPV6-COUNTRY-ISP',
      'IPV6-COUNTRY',
  ];

  /**
   * Static memory buffer to use for MEMORY_CACHE mode, the keys will be BIN filenames and the values their contents
   *
   * @access private
   * @static
   * @var array
   */
  private static $buffer = [];

  /**
   * The machine's float size
   *
   * @access private
   * @static
   * @var int
   */
  private static $floatSize = null;

  /**
   * The configured memory limit
   *
   * @access private
   * @static
   * @var int
   */
  private static $memoryLimit = null;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Caching backend controls  ////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Caching mode to use (one of FILE_IO, MEMORY_CACHE, or SHARED_MEMORY)
   *
   * @access private
   * @var int
   */
  private $mode;

  /**
   * File pointer to use for FILE_IO mode, BIN filename for MEMORY_CACHE mode, or shared memory id to use for SHARED_MEMORY mode
   *
   * @access private
   * @var resource|int|false
   */
  private $resource = false;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Database metadata  ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Database's compilation date
   *
   * @access private
   * @var int
   */
  private $date;

  /**
   * Database's type (0--23)
   *
   * @access private
   * @var int
   */
  private $type;

  /**
   * Database's register width (as an array mapping 4 to IPv4 width, and 6 to IPv6 width)
   *
   * @access private
   * @var array
   */
  private $columnWidth = [];

  /**
   * Database's pointer offset (as an array mapping 4 to IPv4 offset, and 6 to IPv6 offset)
   *
   * @access private
   * @var array
   */
  private $offset = [];

  /**
   * Amount of IP address ranges the database contains (as an array mapping 4 to IPv4 count, and 6 to IPv6 count)
   *
   * @access private
   * @var array
   */
  private $ipCount = [];

  /**
   * Offset withing the database where IP data begins (as an array mapping 4 to IPv4 base, and 6 to IPv6 base)
   *
   * @access private
   * @var array
   */
  private $ipBase = [];

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Default fields  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Default fields to return during lookup
   *
   * @access private
   * @var int|array
   */
  private $defaultFields = self::ALL;

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Administrative public interface  /////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Constructor
   *
   * @access public
   * @param string $file  Filename of the BIN database to load
   * @param int $mode  Caching mode (one of FILE_IO, MEMORY_CACHE, or SHARED_MEMORY)
   * @throws \Exception
   */
  public function __construct($file = null, $mode = self::FILE_IO, $defaultFields = self::ALL) {
    // find the referred file and its size
    $rfile = self::findFile($file);
    $size  = filesize($rfile);

    // initialize caching backend
    switch ($mode) {
      case self::SHARED_MEMORY:
        // verify the shmop extension is loaded
        if (!extension_loaded('shmop')) {
          throw new \Exception(__CLASS__ . ": Please make sure your PHP setup has the 'shmop' extension enabled.", self::EXCEPTION_NO_SHMOP);
        }

        $limit = self::getMemoryLimit();
        if (false !== $limit && $size > $limit) {
          throw new \Exception(__CLASS__ . ": Insufficient memory to load file '{$rfile}'.", self::EXCEPTION_NO_MEMORY);
        }

        $this->mode = self::SHARED_MEMORY;
        $shmKey     = self::getShmKey($rfile);

        // try to open the shared memory segment
        $this->resource = @shmop_open($shmKey, 'a', 0, 0);
        if (false === $this->resource) {
          // the segment did not exist, create it and load the database into it
          $fp = fopen($rfile, 'rb');
          if (false === $fp) {
            throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
          }

          // try to open the memory segment for exclusive access
          $shmId = @shmop_open($shmKey, 'n', self::SHM_PERMS, $size);
          if (false === $shmId) {
            throw new \Exception(__CLASS__ . ": Unable to create shared memory block '{$shmKey}'.", self::EXCEPTION_SHMOP_CREATE_FAILED);
          }

          // load SHM_CHUNK_SIZE bytes at a time
          $pointer = 0;
          while ($pointer < $size) {
            $buf = fread($fp, self::SHM_CHUNK_SIZE);
            shmop_write($shmId, $buf, $pointer);
            $pointer += self::SHM_CHUNK_SIZE;
          }
          shmop_close($shmId);
          fclose($fp);

          // now open the memory segment for readonly access
          $this->resource = @shmop_open($shmKey, 'a', 0, 0);
          if (false === $this->resource) {
            throw new \Exception(__CLASS__ . ": Unable to access shared memory block '{$shmKey}' for reading.", self::EXCEPTION_SHMOP_READING_FAILED);
          }
        }
        break;

      case self::FILE_IO:
        $this->mode     = self::FILE_IO;
        $this->resource = @fopen($rfile, 'rb');
        if (false === $this->resource) {
          throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
        }
        break;

      case self::MEMORY_CACHE:
        $this->mode     = self::MEMORY_CACHE;
        $this->resource = $rfile;
        if (!array_key_exists($rfile, self::$buffer)) {
          $limit = self::getMemoryLimit();
          if (false !== $limit && $size > $limit) {
            throw new \Exception(__CLASS__ . ": Insufficient memory to load file '{$rfile}'.", self::EXCEPTION_NO_MEMORY);
          }

          self::$buffer[$rfile] = @file_get_contents($rfile);
          if (false === self::$buffer[$rfile]) {
            throw new \Exception(__CLASS__ . ": Unable to open file '{$rfile}'.", self::EXCEPTION_FILE_OPEN_FAILED);
          }
        }
        break;

      default:
    }

    // determine the platform's float size
    //
    // NB: this should be a constant instead, and some unpack / typebanging magic
    //     should be used to accomodate different float sizes, but, as the libreary
    //     is written, this is the sanest thing to do anyway
    //
    if (null === self::$floatSize) {
      self::$floatSize = strlen(pack('f', M_PI));
    }

    // set default fields to retrieve
    $this->defaultFields = $defaultFields;

    // extract database metadata
    $this->type           = $this->readByte(1) - 1;
    $this->columnWidth[4] = $this->readByte(2) * 4;
    $this->columnWidth[6] = $this->columnWidth[4] + 12;
    $this->offset[4]      = -4;
    $this->offset[6]      = 8;
    //
    $year                 = 2000 + $this->readByte(3);
    $month                = $this->readByte(4);
    $day                  = $this->readByte(5);
    $this->date           = date('Y-m-d', strtotime("{$year}-{$month}-{$day}"));
    //
    $this->ipCount[4]     = $this->readWord(6);
    $this->ipBase[4]      = $this->readWord(10);
    $this->ipCount[6]     = $this->readWord(14);
    $this->ipBase[6]      = $this->readWord(18);
  }

  /**
   * Destructor
   *
   * @access public
   */
  public function __destruct() {
    switch ($this->mode) {
      case self::FILE_IO:
        // free the file pointer
        if (false !== $this->resource) {
          fclose($this->resource);
          $this->resource = false;
        }
        break;
      case self::SHARED_MEMORY:
        // detach from the memory segment
        if (false !== $this->resource) {
          shmop_close($this->resource);
          $this->resource = false;
        }
        break;
    }
  }

  /**
   * Tear down a shared memory segment created for the given file
   *
   * @access public
   * @static
   * @param string $file  Filename of the BIN database whise segment must be deleted
   * @throws \Exception
   */
  public static function shmTeardown($file) {
    // verify the shmop extension is loaded
    if (!extension_loaded('shmop')) {
      throw new \Exception(__CLASS__ . ": Please make sure your PHP setup has the 'shmop' extension enabled.", self::EXCEPTION_NO_SHMOP);
    }

    // Get actual file path
    $rfile = realpath($file);

	// If the file cannot be found, except away
    if (false === $rfile) {
      throw new \Exception(__CLASS__ . ": Database file '{$file}' does not seem to exist.", self::EXCEPTION_DBFILE_NOT_FOUND);
    }

    $shmKey = self::getShmKey($rfile);

	// Try to open the memory segment for writing
    $shmId  = @shmop_open($shmKey, 'w', 0, 0);
    if (false === $shmId) {
      throw new \Exception(__CLASS__ . ": Unable to access shared memory block '{$shmKey}' for writing.", self::EXCEPTION_SHMOP_WRITING_FAILED);
    }

    // Delete and close the descriptor
    shmop_delete($shmId);
    shmop_close($shmId);
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Static tools  ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Get memory limit from the current PHP settings (return false if no memory limit set)
   *
   * @access private
   * @static
   * @return int|boolean
   */
  private static function getMemoryLimit() {
    // Get values if no cache
    if (null === self::$memoryLimit) {
      $limit = ini_get('memory_limit');

	  // Feal with defaults
      if ('' === (string) $limit) {
        $limit = '128M';
      }

      $value = (int) $limit;

	  // Deal with "no-limit"
      if ($value < 0) {
        $value = false;
      } else {
        // Deal with shorthand bytes
        switch (strtoupper(substr($limit, -1))) {
          case 'G': $value *= 1024;
          case 'M': $value *= 1024;
          case 'K': $value *= 1024;
        }
      }
      self::$memoryLimit = $value;
    }
    return self::$memoryLimit;
  }

  /**
   * Return the realpath of the given file or look for the first matching database option
   *
   * @param string $file  File to try to find, or null to try the databases in turn on the current file's path
   * @return string
   * @throws \Exception
   */
  private static function findFile($file = null) {
    if (null !== $file) {
      // Get actual file path
      $rfile = realpath($file);

      // If the file cannot be found, except away
      if (false === $rfile) {
        throw new \Exception(__CLASS__ . ": Database file '{$file}' does not seem to exist.", self::EXCEPTION_DBFILE_NOT_FOUND);
      }

      return $rfile;
    } else {
      // Try to get current path
      $current = realpath(dirname(__FILE__));

	  if (false === $current) {
        throw new \Exception(__CLASS__ . ": Cannot determine current path.", self::EXCEPTION_NO_PATH);
      }
      // Try each database in turn
      foreach (self::$databases as $database) {
        $rfile = realpath("{$current}/{$database}.BIN");
        if (false !== $rfile) {
          return $rfile;
        }
      }
      // No candidates found
      throw new \Exception(__CLASS__ . ": No candidate database files found.", self::EXCEPTION_NO_CANDIDATES);
    }
  }

  /**
   * Make the given number positive by wrapping it to 8 bit values
   *
   * @access private
   * @static
   * @param int $x  Number to wrap
   * @return int
   */
  private static function wrap8($x) {
    return $x + ($x < 0 ? 256 : 0);
  }

  /**
   * Make the given number positive by wrapping it to 32 bit values
   *
   * @access private
   * @static
   * @param int $x  Number to wrap
   * @return int
   */
  private static function wrap32($x) {
    return $x + ($x < 0 ? 4294967296 : 0);
  }

  /**
   * Generate a unique and repeatable shared memory key for each instance to use
   *
   * @access private
   * @static
   * @param string $filename  Filename of the BIN file
   * @return int
   */
  private static function getShmKey($filename) {
    // This will create a shared memory key that deterministically depends only on
    // the current file's path and the BIN file's path
    return (int) sprintf('%u', self::wrap32(crc32(__FILE__ . ':' . $filename)));
  }

  /**
   * Determine whether the given IP number of the given version lies between the given bounds
   *
   * This function will return 0 if the given ip number falls within the given bounds
   * for the given version, -1 if it falls below, and 1 if it falls above.
   *
   * @access private
   * @static
   * @param int $version  IP version to use (either 4 or 6)
   * @param int|string $ip  IP number to check (int for IPv4, string for IPv6)
   * @param int|string $low  Lower bound (int for IPv4, string for IPv6)
   * @param int|string $high  Uppoer bound (int for IPv4, string for IPv6)
   * @return int
   */
  private static function ipBetween($version, $ip, $low, $high) {
    if (4 === $version) {
      // Use normal PHP ints
      if ($low <= $ip) {
        if ($ip < $high) {
          return 0;
        } else {
          return 1;
        }
      } else {
        return -1;
      }
    } else {
      // Use BCMath
      if (bccomp($low, $ip, 0) <= 0) {
        if (bccomp($ip, $high, 0) <= -1) {
          return 0;
        } else {
          return 1;
        }
      } else {
        return -1;
      }
    }
  }

  /**
   * Get the IP version and number of the given IP address
   *
   * This method will return an array, whose components will be:
   * - first: 4 if the given IP address is an IPv4 one, 6 if it's an IPv6 one,
   *          or fase if it's neither.
   * - second: the IP address' number if its version is 4, the number string if
   *           its version is 6, false otherwise.
   *
   * @access private
   * @static
   * @param string $ip  IP address to extract the version and number for
   * @return array
   */
  private static function ipVersionAndNumber($ip) {
    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
      return [4, sprintf('%u', ip2long($ip))];
    } elseif (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
	  $result = 0;

	  foreach (str_split(bin2hex(inet_pton($ip)), 8) as $word) {
        $result = bcadd(bcmul($result, '4294967296', 0), self::wrap32(hexdec($word)), 0);
      }

	  return [6, $result];
    } else {
      // Invalid IP address, return falses
      return [false, false];
    }
  }

  /**
   * Return the decimal string representing the binary data given
   *
   * @access private
   * @static
   * @param string $data  Binary data to parse
   * @return string
   */
  private static function bcBin2Dec($data) {
	$parts = array(
		unpack('V', substr($data, 12, 4)),
		unpack('V', substr($data, 8, 4)),
		unpack('V', substr($data, 4, 4)),
		unpack('V', substr($data, 0, 4)),
	);

	foreach($parts as &$part)
		if($part[1] < 0)
			$part[1] += 4294967296;

	$result = bcadd(bcadd(bcmul($parts[0][1], bcpow(4294967296, 3)), bcmul($parts[1][1], bcpow(4294967296, 2))), bcadd(bcmul($parts[2][1], 4294967296), $parts[3][1]));

    return $result;
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Caching backend abstraction  /////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Low level read function to abstract away the caching mode being used
   *
   * @access private
   * @param int $pos  Position from where to start reading
   * @param int $len  Read this many bytes
   * @return string
   */
  private function read($pos, $len) {
    switch ($this->mode) {
      case self::SHARED_MEMORY:
        return shmop_read($this->resource, $pos, $len);

      case self::MEMORY_CACHE:
        return $data = substr(self::$buffer[$this->resource], $pos, $len);

      default:
        fseek($this->resource, $pos, SEEK_SET);
        return fread($this->resource, $len);
    }
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Low-level read functions  ////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Low level function to fetch a string from the caching backend
   *
   * @access private
   * @param int $pos  Position to read from
   * @param int $additional  Additional offset to apply
   * @return string
   */
  private function readString($pos, $additional = 0) {
    // Get the actual pointer to the string's head
    $spos = $this->readWord($pos) + $additional;

	// Read as much as the length (first "string" byte) indicates
    return $this->read($spos + 1, $this->readByte($spos + 1));
  }

  /**
   * Low level function to fetch a float from the caching backend
   *
   * @access private
   * @param int $pos  Position to read from
   * @return float
   */
  private function readFloat($pos) {
    // Unpack a float's size worth of data
    return unpack('f', $this->read($pos - 1, self::$floatSize))[1];
  }

  /**
   * Low level function to fetch a quadword (128 bits) from the caching backend
   *
   * @access private
   * @param int $pos  Position to read from
   * @return string
   */
  private function readQuad($pos) {
    // Use BCMath ints to get a quad's (128-bit) value
    return self::bcBin2Dec($this->read($pos - 1, 16));
  }

  /**
   * Low level function to fetch a word (32 bits) from the caching backend
   *
   * @access private
   * @param int $pos  Position to read from
   * @return int
   */
  private function readWord($pos) {
    // Unpack a long's worth of data
    return self::wrap32(unpack('V', $this->read($pos - 1, 4))[1]);
  }

  /**
   * Low level function to fetch a byte from the caching backend
   *
   * @access private
   * @param int $pos  Position to read from
   * @return string
   */
  private function readByte($pos) {
    // Unpack a byte's worth of data
    return self::wrap8(unpack('C', $this->read($pos - 1, 1))[1]);
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  High-level read functions  ///////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * High level function to fetch the country name and code
   *
   * @access private
   * @param int|boolean $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return array
   */
  private function readCountryNameAndCode($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $countryCode = self::INVALID_IP_ADDRESS;
      $countryName = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::COUNTRY_CODE][$this->type]) {
      // If the field is not suported, return accordingly
      $countryCode = self::FIELD_NOT_SUPPORTED;
      $countryName = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the country code and name (the name shares the country's pointer,
      // but it must be artificially displaced 3 bytes ahead: 2 for the country code, one
      // for the country name's length)
      $countryCode = $this->readString($pointer + self::$columns[self::COUNTRY_CODE][$this->type]);
      $countryName = $this->readString($pointer + self::$columns[self::COUNTRY_NAME][$this->type], 3);
    }

    return [$countryName, $countryCode];
  }

  /**
   * High level function to fetch the region name
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readRegionName($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $regionName = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::REGION_NAME][$this->type]) {
      // If the field is not suported, return accordingly
      $regionName = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the region name
      $regionName = $this->readString($pointer + self::$columns[self::REGION_NAME][$this->type]);
    }
    return $regionName;
  }

  /**
   * High level function to fetch the city name
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readCityName($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $cityName = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::CITY_NAME][$this->type]) {
      // If the field is not suported, return accordingly
      $cityName = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the city name
      $cityName = $this->readString($pointer + self::$columns[self::CITY_NAME][$this->type]);
    }
    return $cityName;
  }

  /**
   * High level function to fetch the latitude and longitude
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return array
   */
  private function readLatitudeAndLongitude($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $latitude  = self::INVALID_IP_ADDRESS;
      $longitude = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::LATITUDE][$this->type]) {
      // If the field is not suported, return accordingly
      $latitude  = self::FIELD_NOT_SUPPORTED;
      $longitude = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read latitude and longitude
      $latitude  = $this->readFloat($pointer + self::$columns[self::LATITUDE][$this->type]);
      $longitude = $this->readFloat($pointer + self::$columns[self::LONGITUDE][$this->type]);
    }
    return [$latitude, $longitude];
  }

  /**
   * High level function to fetch the ISP name
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readIsp($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $isp = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::ISP][$this->type]) {
      // If the field is not suported, return accordingly
      $isp = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read isp name
      $isp = $this->readString($pointer + self::$columns[self::ISP][$this->type]);
    }
    return $isp;
  }

  /**
   * High level function to fetch the domain name
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readDomainName($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $domainName = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::DOMAIN_NAME][$this->type]) {
      // If the field is not suported, return accordingly
      $domainName = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the domain name
      $domainName = $this->readString($pointer + self::$columns[self::DOMAIN_NAME][$this->type]);
    }
    return $domainName;
  }

  /**
   * High level function to fetch the zip code
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readZipCode($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $zipCode = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::ZIP_CODE][$this->type]) {
      // If the field is not suported, return accordingly
      $zipCode = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the zip code
      $zipCode = $this->readString($pointer + self::$columns[self::ZIP_CODE][$this->type]);
    }
    return $zipCode;
  }

  /**
   * High level function to fetch the time zone
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readTimeZone($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $timeZone = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::TIME_ZONE][$this->type]) {
      // If the field is not suported, return accordingly
      $timeZone = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the time zone
      $timeZone = $this->readString($pointer + self::$columns[self::TIME_ZONE][$this->type]);
    }
    return $timeZone;
  }

  /**
   * High level function to fetch the net speed
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readNetSpeed($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $netSpeed = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::NET_SPEED][$this->type]) {
      // If the field is not suported, return accordingly
      $netSpeed = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the net speed
      $netSpeed = $this->readString($pointer + self::$columns[self::NET_SPEED][$this->type]);
    }
    return $netSpeed;
  }

  /**
   * High level function to fetch the IDD and area codes
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return array
   */
  private function readIddAndAreaCodes($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $iddCode  = self::INVALID_IP_ADDRESS;
      $areaCode = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::IDD_CODE][$this->type]) {
      // If the field is not suported, return accordingly
      $iddCode  = self::FIELD_NOT_SUPPORTED;
      $areaCode = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read IDD and area codes
      $iddCode  = $this->readString($pointer + self::$columns[self::IDD_CODE][$this->type]);
      $areaCode = $this->readString($pointer + self::$columns[self::AREA_CODE][$this->type]);
    }
    return [$iddCode, $areaCode];
  }

  /**
   * High level function to fetch the weather station name and code
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return array
   */
  private function readWeatherStationNameAndCode($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $weatherStationName = self::INVALID_IP_ADDRESS;
      $weatherStationCode = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::WEATHER_STATION_NAME][$this->type]) {
      // If the field is not suported, return accordingly
      $weatherStationName = self::FIELD_NOT_SUPPORTED;
      $weatherStationCode = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read weather station name and code
      $weatherStationName = $this->readString($pointer + self::$columns[self::WEATHER_STATION_NAME][$this->type]);
      $weatherStationCode = $this->readString($pointer + self::$columns[self::WEATHER_STATION_CODE][$this->type]);
    }
    return [$weatherStationName, $weatherStationCode];
  }

  /**
   * High level function to fetch the MCC, MNC, and mobile carrier name
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return array
   */
  private function readMccMncAndMobileCarrierName($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $mcc               = self::INVALID_IP_ADDRESS;
      $mnc               = self::INVALID_IP_ADDRESS;
      $mobileCarrierName = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::MCC][$this->type]) {
      // If the field is not suported, return accordingly
      $mcc               = self::FIELD_NOT_SUPPORTED;
      $mnc               = self::FIELD_NOT_SUPPORTED;
      $mobileCarrierName = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read MCC, MNC, and mobile carrier name
      $mcc               = $this->readString($pointer + self::$columns[self::MCC][$this->type]);
      $mnc               = $this->readString($pointer + self::$columns[self::MNC][$this->type]);
      $mobileCarrierName = $this->readString($pointer + self::$columns[self::MOBILE_CARRIER_NAME][$this->type]);
    }
    return [$mcc, $mnc, $mobileCarrierName];
  }

  /**
   * High level function to fetch the elevation
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readElevation($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $elevation = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::ELEVATION][$this->type]) {
      // If the field is not suported, return accordingly
      $elevation = self::FIELD_NOT_SUPPORTED;
    } else {
      // Read the elevation
      $elevation = $this->readString($pointer + self::$columns[self::ELEVATION][$this->type]);
    }
    return $elevation;
  }

  /**
   * High level function to fetch the usage type
   *
   * @access private
   * @param int $pointer  Position to read from, if false, return self::INVALID_IP_ADDRESS
   * @return string
   */
  private function readUsageType($pointer) {
    if (false === $pointer) {
      // Deal with invalid IPs
      $usageType = self::INVALID_IP_ADDRESS;
    } elseif (0 === self::$columns[self::USAGE_TYPE][$this->type]) {
      // If the field is not suported, return accordingly
      $usageType = self::FIELD_NOT_SUPPORTED;
    } else {
      $usageType = $this->readString($pointer + self::$columns[self::USAGE_TYPE][$this->type]);
    }
    return $usageType;
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Binary search and support functions  /////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * High level fucntion to read an IP address of the given version
   *
   * @access private
   * @param int $version  IP version to read (either 4 or 6, returns false on anything else)
   * @param int $pos  Position to read from
   * @return int|string|boolean
   */
  private function readIp($version, $pos) {
    if (4 === $version) {
      // Read a standard PHP int
      return self::wrap32($this->readWord($pos));
    } elseif (6 === $version) {
      // Read as BCMath int (quad)
      return $this->readQuad($pos);
    } else {
      // unrecognized
      return false;
    }
  }

  /**
   * Perform a binary search on the given IP number and return a pointer to its record
   *
   * @access private
   * @param int $version  IP version to use for searching
   * @param int $ipNumber  IP number to look for
   * @return int|boolean
   */
  private function binSearch($version, $ipNumber) {
    if (false === $version) {
      // unrecognized version
      return false;
    }

    // initialize fields
    $base   = $this->ipBase[$version];
    $offset = $this->offset[$version];
    $width  = $this->columnWidth[$version];
    $high   = $this->ipCount[$version];
    $low    = 0;

    // as long as we can narrow down the search...
    while ($low <= $high) {
      $mid     = (int) ($low + (($high - $low) / 2));

	  // Read IP ranges to get boundaries
      $ip_from = $this->readIp($version, $base + $width * $mid);
      $ip_to   = $this->readIp($version, $base + $width * ($mid + 1));

      // determine whether to return, repeat on the lower half, or repeat on the upper half
      switch (self::ipBetween($version, $ipNumber, $ip_from, $ip_to)) {
        case 0:
          return $base + $offset + $mid * $width;
        case -1:
          $high = $mid - 1;
          break;
        case 1:
          $low  = $mid + 1;
          break;
      }
    }

    // nothing found
    return false;
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //  Public interface  ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  /**
   * Get the database's compilation date as a string of the form 'YYYY-MM-DD'
   *
   * @access public
   * @return string
   */
  public function getDate() {
    return $this->date;
  }

  /**
   * Get the database's type (1--24)
   *
   * @access public
   * @return int
   */
  public function getType() {
    return $this->type + 1;
  }

  /**
   * Return this database's available fields
   *
   * @access public
   * @param boolean $asNames  Whether to return the mapped names intead of numbered constants
   * @return array
   */
  public function getFields($asNames = false) {
    $result = array_keys(array_filter(self::$columns, function ($field) {
              return 0 !== $field[$this->type];
            }));
    if ($asNames) {
      $return = [];
      foreach ($result as $field) {
        $return[] = self::$names[$field];
      }
      return $return;
    } else {
      return $result;
    }
  }

  /**
   * This function will look the given IP address up in the database and return the result(s) asked for
   *
   * If a single, SINGULAR, field is specified, only its mapped value is returned.
   * If many fields are given (as an array) or a MULTIPLE field is specified, an
   * array whith the returned singular field names as keys and their corresponding
   * values is returned.
   *
   * @access public
   * @param string $ip  IP address to look up
   * @param int|array $fields  Field(s) to return
   * @param boolean $asNamed  Whether to return an associative array instead
   * @return mixed|array|boolean
   */
  public function lookup($ip, $fields = null, $asNamed = true) {
    // extract IP version and number
    list($ipVersion, $ipNumber) = self::ipVersionAndNumber($ip);
    // perform the binary search proper (if the IP address was invalid, binSearch will return false)
    $pointer = $this->binSearch($ipVersion, $ipNumber);

    // apply defaults if needed
    if (null === $fields) {
      $fields = $this->defaultFields;
    }

    // turn fields into an array in case it wasn't already
    $ifields = (array) $fields;
    // add fields if needed
    if (in_array(self::ALL, $ifields)) {
      $ifields[] = self::REGION_NAME;
      $ifields[] = self::CITY_NAME;
      $ifields[] = self::ISP;
      $ifields[] = self::DOMAIN_NAME;
      $ifields[] = self::ZIP_CODE;
      $ifields[] = self::TIME_ZONE;
      $ifields[] = self::NET_SPEED;
      $ifields[] = self::ELEVATION;
      $ifields[] = self::USAGE_TYPE;
      //
      $ifields[] = self::COUNTRY;
      $ifields[] = self::COORDINATES;
      $ifields[] = self::IDD_AREA;
      $ifields[] = self::WEATHER_STATION;
      $ifields[] = self::MCC_MNC_MOBILE_CARRIER_NAME;
      //
      $ifields[] = self::IP_ADDRESS;
      $ifields[] = self::IP_VERSION;
      $ifields[] = self::IP_NUMBER;
    }
    // turn into a uniquely-valued array the fast way
    // (see: http://php.net/manual/en/function.array-unique.php#77743)
    $afields = array_keys(array_flip($ifields));
    // sorting them in reverse order warrants that by the time we get to
    // SINGULAR fields, its MULTIPLE counterparts, if at all present, have
    // already been retrieved
    rsort($afields);

    // maintain a list of already retrieved fields to avoid doing it twice
    $done    = [
        self::COUNTRY_CODE                => false,
        self::COUNTRY_NAME                => false,
        self::REGION_NAME                 => false,
        self::CITY_NAME                   => false,
        self::LATITUDE                    => false,
        self::LONGITUDE                   => false,
        self::ISP                         => false,
        self::DOMAIN_NAME                 => false,
        self::ZIP_CODE                    => false,
        self::TIME_ZONE                   => false,
        self::NET_SPEED                   => false,
        self::IDD_CODE                    => false,
        self::AREA_CODE                   => false,
        self::WEATHER_STATION_CODE        => false,
        self::WEATHER_STATION_NAME        => false,
        self::MCC                         => false,
        self::MNC                         => false,
        self::MOBILE_CARRIER_NAME         => false,
        self::ELEVATION                   => false,
        self::USAGE_TYPE                  => false,
        //
        self::COUNTRY                     => false,
        self::COORDINATES                 => false,
        self::IDD_AREA                    => false,
        self::WEATHER_STATION             => false,
        self::MCC_MNC_MOBILE_CARRIER_NAME => false,
        //
        self::IP_ADDRESS                  => false,
        self::IP_VERSION                  => false,
        self::IP_NUMBER                   => false,
    ];
    // results are empty to begin with
    $results = [];

    // treat each field in turn
    foreach ($afields as $afield) {
      switch ($afield) {
        // purposefully ignore self::ALL, we already dealt with it
        case self::ALL: break;
        //
        case self::COUNTRY:
          if (!$done[self::COUNTRY]) {
            list($results[self::COUNTRY_NAME], $results[self::COUNTRY_CODE]) = $this->readCountryNameAndCode($pointer);
            $done[self::COUNTRY]      = true;
            $done[self::COUNTRY_CODE] = true;
            $done[self::COUNTRY_NAME] = true;
          }
          break;
        case self::COORDINATES:
          if (!$done[self::COORDINATES]) {
            list($results[self::LATITUDE], $results[self::LONGITUDE]) = $this->readLatitudeAndLongitude($pointer);
            $done[self::COORDINATES] = true;
            $done[self::LATITUDE]    = true;
            $done[self::LONGITUDE]   = true;
          }
          break;
        case self::IDD_AREA:
          if (!$done[self::IDD_AREA]) {
            list($results[self::IDD_CODE], $results[self::AREA_CODE]) = $this->readIddAndAreaCodes($pointer);
            $done[self::IDD_AREA]  = true;
            $done[self::IDD_CODE]  = true;
            $done[self::AREA_CODE] = true;
          }
          break;
        case self::WEATHER_STATION:
          if (!$done[self::WEATHER_STATION]) {
            list($results[self::WEATHER_STATION_NAME], $results[self::WEATHER_STATION_CODE]) = $this->readWeatherStationNameAndCode($pointer);
            $done[self::WEATHER_STATION]      = true;
            $done[self::WEATHER_STATION_NAME] = true;
            $done[self::WEATHER_STATION_CODE] = true;
          }
          break;
        case self::MCC_MNC_MOBILE_CARRIER_NAME:
          if (!$done[self::MCC_MNC_MOBILE_CARRIER_NAME]) {
            list($results[self::MCC], $results[self::MNC], $results[self::MOBILE_CARRIER_NAME]) = $this->readMccMncAndMobileCarrierName($pointer);
            $done[self::MCC_MNC_MOBILE_CARRIER_NAME] = true;
            $done[self::MCC]                         = true;
            $done[self::MNC]                         = true;
            $done[self::MOBILE_CARRIER_NAME]         = true;
          }
          break;
        //
        case self::COUNTRY_CODE:
          if (!$done[self::COUNTRY_CODE]) {
            $results[self::COUNTRY_CODE] = $this->readCountryNameAndCode($pointer)[1];
            $done[self::COUNTRY_CODE]    = true;
          }
          break;
        case self::COUNTRY_NAME:
          if (!$done[self::COUNTRY_CODE]) {
            $results[self::COUNTRY_CODE] = $this->readCountryNameAndCode($pointer)[0];
            $done[self::COUNTRY_CODE]    = true;
          }
          break;
        case self::REGION_NAME:
          if (!$done[self::REGION_NAME]) {
            $results[self::REGION_NAME] = $this->readRegionName($pointer);
            $done[self::REGION_NAME]    = true;
          }
          break;
        case self::CITY_NAME:
          if (!$done[self::CITY_NAME]) {
            $results[self::CITY_NAME] = $this->readCityName($pointer);
            $done[self::CITY_NAME]    = true;
          }
          break;
        case self::LATITUDE:
          if (!$done[self::LATITUDE]) {
            $results[self::LATITUDE] = $this->readLatitudeAndLongitude($pointer)[0];
            $done[self::LATITUDE]    = true;
          }
          break;
        case self::LONGITUDE:
          if (!$done[self::LONGITUDE]) {
            $results[self::LONGITUDE] = $this->readLatitudeAndLongitude($pointer)[1];
            $done[self::LONGITUDE]    = true;
          }
          break;
        case self::ISP:
          if (!$done[self::ISP]) {
            $results[self::ISP] = $this->readIsp($pointer);
            $done[self::ISP]    = true;
          }
          break;
        case self::DOMAIN_NAME:
          if (!$done[self::DOMAIN_NAME]) {
            $results[self::DOMAIN_NAME] = $this->readDomainName($pointer);
            $done[self::DOMAIN_NAME]    = true;
          }
          break;
        case self::ZIP_CODE:
          if (!$done[self::ZIP_CODE]) {
            $results[self::ZIP_CODE] = $this->readZipCode($pointer);
            $done[self::ZIP_CODE]    = true;
          }
          break;
        case self::TIME_ZONE:
          if (!$done[self::TIME_ZONE]) {
            $results[self::TIME_ZONE] = $this->readTimeZone($pointer);
            $done[self::TIME_ZONE]    = true;
          }
          break;
        case self::NET_SPEED:
          if (!$done[self::NET_SPEED]) {
            $results[self::NET_SPEED] = $this->readNetSpeed($pointer);
            $done[self::NET_SPEED]    = true;
          }
          break;
        case self::IDD_CODE:
          if (!$done[self::IDD_CODE]) {
            $results[self::IDD_CODE] = $this->readIddAndAreaCodes($pointer)[0];
            $done[self::IDD_CODE]    = true;
          }
          break;
        case self::AREA_CODE:
          if (!$done[self::AREA_CODE]) {
            $results[self::AREA_CODE] = $this->readIddAndAreaCodes($pointer)[1];
            $done[self::AREA_CODE]    = true;
          }
          break;
        case self::WEATHER_STATION_CODE:
          if (!$done[self::WEATHER_STATION_CODE]) {
            $results[self::WEATHER_STATION_CODE] = $this->readWeatherStationNameAndCode($pointer)[1];
            $done[self::WEATHER_STATION_CODE]    = true;
          }
          break;
        case self::WEATHER_STATION_NAME:
          if (!$done[self::WEATHER_STATION_NAME]) {
            $results[self::WEATHER_STATION_NAME] = $this->readWeatherStationNameAndCode($pointer)[0];
            $done[self::WEATHER_STATION_NAME]    = true;
          }
          break;
        case self::MCC:
          if (!$done[self::MCC]) {
            $results[self::MCC] = $this->readMccMncAndMobileCarrierName($pointer)[0];
            $done[self::MCC]    = true;
          }
          break;
        case self::MNC:
          if (!$done[self::MNC]) {
            $results[self::MNC] = $this->readMccMncAndMobileCarrierName($pointer)[1];
            $done[self::MNC]    = true;
          }
          break;
        case self::MOBILE_CARRIER_NAME:
          if (!$done[self::MOBILE_CARRIER_NAME]) {
            $results[self::MOBILE_CARRIER_NAME] = $this->readMccMncAndMobileCarrierName($pointer)[2];
            $done[self::MOBILE_CARRIER_NAME]    = true;
          }
          break;
        case self::ELEVATION:
          if (!$done[self::ELEVATION]) {
            $results[self::ELEVATION] = $this->readElevation($pointer);
            $done[self::ELEVATION]    = true;
          }
          break;
        case self::USAGE_TYPE:
          if (!$done[self::USAGE_TYPE]) {
            $results[self::USAGE_TYPE] = $this->readUsageType($pointer);
            $done[self::USAGE_TYPE]    = true;
          }
          break;
        //
        case self::IP_ADDRESS:
          if (!$done[self::IP_ADDRESS]) {
            $results[self::IP_ADDRESS] = $ip;
            $done[self::IP_ADDRESS]    = true;
          }
          break;
        case self::IP_VERSION:
          if (!$done[self::IP_VERSION]) {
            $results[self::IP_VERSION] = $ipVersion;
            $done[self::IP_VERSION]    = true;
          }
          break;
        case self::IP_NUMBER:
          if (!$done[self::IP_NUMBER]) {
            $results[self::IP_NUMBER] = $ipNumber;
            $done[self::IP_NUMBER]    = true;
          }
          break;
        //
        default:
          $results[$afield] = self::FIELD_NOT_KNOWN;
      }
    }

    // If we were asked for an array, or we have multiple results to return...
    if (is_array($fields) || count($results) > 1) {
      // return array
      if ($asNamed) {
        // apply translations if needed
        $return = [];
        foreach ($results as $key => $val) {
          if (array_key_exists($key, static::$names)) {
            $return[static::$names[$key]] = $val;
          } else {
            $return[$key] = $val;
          }
        }
        return $return;
      } else {
        return $results;
      }
    } else {
      // return a single value
      return array_values($results)[0];
    }
  }

}

Youez - 2016 - github.com/yon3zu
LinuXploit