sapi_register_input_filter  281 ext/filter/filter.c 	sapi_register_input_filter(php_sapi_filter, php_sapi_filter_init TSRMLS_CC);
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, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC), unsigned int (*input_filter_init)(TSRMLS_D) TSRMLS_DC);
sapi_register_input_filter   91 main/php_content_types.c 	sapi_register_input_filter(php_default_input_filter, NULL TSRMLS_CC);