<old_hook>

Fire off a legacy hook with it's args.

Description

apply_filters( '<old_hook>', (unknown) $new_callback_args ); 

Parameters (1)

0. $new_callback_args (unknown)
The new callback args.

Usage

To run the hook, copy the example below.
  1. $new_callback_args = apply_filters( '{$old_hook}', $new_callback_args ); 
  2.  
  3. if ( !empty( $new_callback_args ) ) { 
  4.  
  5. // everything has led up to this point... 
  6.  
  7.  
The following example is for adding a hook callback.
  1. // define the <old_hook> callback 
  2. function filter_old_hook( $new_callback_args ) { 
  3. // make filter magic happen here... 
  4. return $new_callback_args
  5. }; 
  6.  
  7. // add the filter 
  8. add_filter( "{$old_hook}", 'filter_old_hook', 10, 1 ); 
To remove a hook callback, use the example below.
  1. // remove the filter 
  2. remove_filter( "{$old_hook}", 'filter_old_hook', 10, 1 ); 

Defined (1)

The filter is defined in the following location(s).

/includes/class-wc-deprecated-filter-hooks.php  
  1. return apply_filters_ref_array( $old_hook, $new_callback_args );