remove_filter( string $tag, callable $function_to_remove, int $priority = 10 )

Removes a function from a specified filter hook.


Description

This function removes a function attached to a specified filter hook. This method can be used to remove default functions attached to a specific filter hook and possibly replace them with a substitute.

To remove a hook, the $function_to_remove and $priority arguments must match when the hook was added. This goes for both filters and actions. No warning will be given on removal failure.


Parameters

$tag

(Required) The filter hook to which the function to be removed is hooked.

$function_to_remove

(Required) The name of the function which should be removed.

$priority

(Optional) The priority of the function.

Default value: 10


Return

(bool) Whether the function existed before it was removed.


Source

File: wp-includes/plugin.php

function remove_filter( $tag, $function_to_remove, $priority = 10 ) {
	global $wp_filter;

	$r = false;
	if ( isset( $wp_filter[ $tag ] ) ) {
		$r = $wp_filter[ $tag ]->remove_filter( $tag, $function_to_remove, $priority );
		if ( ! $wp_filter[ $tag ]->callbacks ) {
			unset( $wp_filter[ $tag ] );
		}
	}

	return $r;
}


Changelog

Changelog
Version Description
WP-1.2.0 Introduced.