(gdb) bt
#0  0x00002b2f59123f69 in zif_call_user_func_array () from /usr/lib/apache2/modules/libphp5.so
#1  0x00002b2f592078a2 in ?? () from /usr/lib/apache2/modules/libphp5.so
#2  0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#3  0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#4  0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#5  0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#6  0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#7  0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#8  0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#9  0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#10 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#11 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#12 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#13 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#14 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#15 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#16 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#17 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#18 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#19 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#20 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#21 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#22 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#23 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#24 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#25 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#26 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#27 0x00002b2f59207344 in ?? () from /usr/lib/apache2/modules/libphp5.so
#28 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#29 0x00002b2f59200a07 in ?? () from /usr/lib/apache2/modules/libphp5.so
#30 0x00002b2f591f7f0c in execute () from /usr/lib/apache2/modules/libphp5.so
#31 0x00002b2f591d8f83 in zend_execute_scripts () from /usr/lib/apache2/modules/libphp5.so
#32 0x00002b2f59197638 in php_execute_script () from /usr/lib/apache2/modules/libphp5.so
#33 0x00002b2f59258982 in ?? () from /usr/lib/apache2/modules/libphp5.so
#34 0x000000000043796a in ap_run_handler ()
#35 0x000000000043ad02 in ap_invoke_handler ()
#36 0x00000000004470f8 in ap_process_request ()
#37 0x000000000044453c in ?? ()
#38 0x000000000043e822 in ap_run_process_connection ()
#39 0x000000000044aac1 in ?? ()
#40 0x000000000044ad34 in ?? ()
#41 0x000000000044b552 in ap_mpm_run ()
#42 0x0000000000425831 in main ()