mysqlnd_get_backtrace  790 mysqlnd/mysqlnd_debug.c 		mysqlnd_get_backtrace
mysqlnd_get_backtrace   77 mysqlnd/mysqlnd_debug.h PHPAPI char * mysqlnd_get_backtrace(uint max_levels, size_t * length TSRMLS_DC);
mysqlnd_get_backtrace  544 mysqlnd/mysqlnd_result.c 						char *backtrace = mysqlnd_get_backtrace(TSRMLS_C);