sapi_register_input_filter  289 ext/filter/filter.c 	sapi_register_input_filter(php_sapi_filter, php_sapi_filter_init);
sapi_register_input_filter  200 main/SAPI.h    SAPI_API int sapi_register_input_filter(unsigned int (*input_filter)(int arg, char *var, char **val, size_t val_len, size_t *new_val_len), unsigned int (*input_filter_init)(void));
sapi_register_input_filter   55 main/php_content_types.c 	sapi_register_input_filter(php_default_input_filter, NULL);