filter_has_var
filter_input_array
Filter 함수 목록
PHP Manual

# filter_id

(PHP 5 >= 5.2.0)

filter_id — Returns the filter ID belonging to a named filter

### 설명

int filter_id ( string `$filtername` )

### 인수

`filtername`

  Name of a filter to get.

### 반환값

ID of a filter on success or `NULL` if filter doesn't exist.

### 참고

- filter_list() - Returns a list of all supported filters

filter_has_var
filter_input_array
Filter 함수 목록
PHP Manual