attachment_icon

The WordPress Core attachment icon hook.

Description

apply_filters( 'attachment_icon', (unknown) $icon, (unknown) $post_id ); 

Parameters (2)

0. $icon (unknown)
The icon.
1. $post_id (unknown)
The post id.

Usage

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

Defined (1)

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

/wp-includes/deprecated.php  
  1. return apply_filters( 'attachment_icon', $icon, $post->ID );