post_class

Filters the list of CSS classes for the current post.

Description

apply_filters( 'post_class', (array) $classes, (array) $class, (int) $post_id ); 

Parameters (3)

0. $classes (array)
An array of post classes.
1. $class (array)
An array of additional classes added to the post.
2. $post_id (int)
The post id.

Usage

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

Defined (1)

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

/wp-includes/post-template.php  
  1. $classes = apply_filters( 'post_class', $classes, $class, $post->ID );