string_val_len 257 sapi/apache2handler/php_functions.c size_t variable_len, string_val_len; string_val_len 262 sapi/apache2handler/php_functions.c if (zend_parse_parameters(arg_count, "ss|b", &variable, &variable_len, &string_val, &string_val_len, &walk_to_top) == FAILURE) {