Filter Functions
PHP Manual

filter_id

(PHP 5 >= 5.2.0, PECL filter:0.11.0)

filter_idReturns the filter ID belonging to a named filter

Description

int filter_id ( string $filtername )

Parameters

filtername

Name of a filter to get.

Return Values

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

See Also


Filter Functions
PHP Manual