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Description

Removes a function from a specified filter hook.

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.

Usage

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

Parameters

$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 ) optional default: 10 – Optional. The priority of the function. Default 10.

Returns

bool Whether the function existed before it was removed.

Source

File name: wordpress/wp-includes/plugin.php
Lines:

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;
}
 

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