php_sapi_filter    80 ext/filter/filter.c static unsigned int php_sapi_filter(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC);
php_sapi_filter   281 ext/filter/filter.c 	sapi_register_input_filter(php_sapi_filter, php_sapi_filter_init TSRMLS_CC);