#0  0x00000000006b21ec in ?? ()
No symbol table info available.
#1  0x00000000006b2c45 in gc_collect_cycles ()
No symbol table info available.
#2  0x00000000006b2ef4 in gc_zval_possible_root ()
No symbol table info available.
#3  0x00000000006a1698 in zend_hash_destroy ()
No symbol table info available.
#4  0x000000000069469f in _zval_dtor_func ()
No symbol table info available.
#5  0x00000000006886cd in _zval_ptr_dtor ()
No symbol table info available.
#6  0x00000000006bbc0e in ?? ()
No symbol table info available.
#7  0x00000000006bcc70 in execute ()
No symbol table info available.
#8  0x000000000068ab94 in zend_call_function ()
No symbol table info available.
#9  0x00000000005cd107 in ?? ()
No symbol table info available.
#10 0x00000000006e598a in ?? ()
No symbol table info available.
#11 0x00000000006bcc70 in execute ()
No symbol table info available.
#12 0x000000000069499d in zend_execute_scripts ()
No symbol table info available.
#13 0x0000000000640608 in php_execute_script ()
No symbol table info available.
#14 0x0000000000722534 in ?? ()
No symbol table info available.
#15 0x00007fd3440b7c4d in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#16 0x000000000042bea9 in _start ()
No symbol table info available.