fopen_function    666 Zend/zend.c    	zend_fopen = utility_functions->fopen_function;
fopen_function    549 Zend/zend.h    	FILE *(*fopen_function)(const char *filename, char **opened_path TSRMLS_DC);
fopen_function   2138 main/main.c    	zuf.fopen_function = php_fopen_wrapper_for_zend;