remove_filter() WP 1.2.0

Removes a function from a specified filter hook.

This function can be used to remove default functions attached to a specific filter hook and possibly replace them with a substitute or to remove hooks that are added by plugins but interfere (conflict) with current code.

No Hooks.

Return

true/false. Whether the function existed before it was removed.

Usage

remove_filter( $tag, $function_to_remove, $priority );

$tag(string) (required)

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

$function_to_remove(callable) (required)

The name of the function which should be removed.

$priority(int)

The priority of the function.
Default: 10

Examples

#1 Remove a filter wpautop from hook the_content

remove_filter( 'the_content', 'wpautop' );

#2 Remove a filter capital_P_dangit from hooks 'the_content', 'the_title', 'comment_text'

foreach ( array( 'the_content', 'the_title', 'comment_text' ) as $hook )
	remove_filter( $hook, 'capital_P_dangit' );

#3 Remove a filter added from PHP class

If a filter has been added from within a class, removing it will require accessing the class variable:

global $my_class;
remove_filter( 'the_content', array( $my_class, 'class_filter_function') );

To get a better grasp of removing hooks that use class method, see the description of remove_action()

Code of remove filter: wp-includes/plugin.php ^{WP 5.2.1}

<?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;
}

Related Functions

From tag: Filters (hooks)

More from category: Hooks (actions, filters)