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Function Reference/get post class

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WordPress Themes have a template tag for the post HTML tag which will help theme authors to style more effectively with CSS. The Template Tag is called get_post_class. This function returns different post container classes which can be added, typically, in the index.php, single.php, and other template files featuring post content, typically in the HTML <div id="post"> tag.

Contents

Description

Retrieve the classes for the post div as an array.

The class names are add are many. If the post is a sticky, then the 'sticky' class name. The class 'hentry' is always added to each post. For each category, the class will be added with 'category-' with category slug is added. The tags are the same way as the categories with 'tag-' before the tag slug. All classes are passed through the filter, 'post_class' with the list of classes, followed by $class parameter value, with the post ID as the last parameter.

Usage

<?php get_post_class($class, $post_id); ?>

Parameters

$class
(string or array) (optional) A string or array of classes to add to the return value
Default: '' (empty string)
$post_id
(int) (optional) An optional post ID
Default: null

Return Value

$classes (array) 
An array of class names.
Get the object post from get_post($post_id); so, if empty return value of get_post (typically invalid $post_id), return an empty array of classes ($classes).

Examples

Default
Default example without params and global $post object available (or in the loop). 
<?php 
 $postClass = get_post_class(); 
 var_dump($postClass);
 
/*Output:*/
 array() {
 0 => string 'post-[ID]' (length=7)
 1 => string '[post_type]' (length=4)
 2 => string 'type-[post_type]' (length=9)
 3 => string 'status-[post_status]' (length=14)
 4 => string 'format-[post_format]' (length=15)
 5 => string 'hentry' (length=6)
 6 => string 'category-[...]'
 X => string 'tag-[...]'
}
?>
With params
Passing an array of your own classes.

<?php
/* Optional:
global $post;
$postID = $post->ID;
 OR $postID = get_the_ID();
$postClass = get_post_class(array('my-class'));
 OR $postClass = get_post_class(array('my-class'), (int) $postID);
*/

$postClass = get_post_class(array('my-class'));
var_dump($postClass);

/* Output:
array
  0 => string 'post-[ID]' (length=7)
  1 => string '[post_type]' (length=4)
  2 => string 'type-[post_type]' (length=9)
  3 => string 'status-[post_status]' (length=14)
  4 => string 'format-[post_format]' (length=15)
  5 => string 'hentry' (length=6)
  6 => string 'category-[...]'
  ...
  X => string 'tag-[...]'
  ...
  X+1 => string 'my-class' (length=8)
...
*/
?>

Source Code

get_post_class() is located in wp-includes/post-template.php.

Changelog

  • Since: 2.7

Related

body_class(), next_image_link(), next_post_link(), next_posts_link(), post_class(), post_password_required(), posts_nav_link(), previous_image_link(), previous_post_link(), previous_posts_link(), single_post_title, sticky_class(), the_category(), the_category_rss(), the_content(), the_content_rss(), the_excerpt(), the_excerpt_rss(), the_ID(), the_meta(), the_shortlink(), the_tags(), the_title(), the_title_attribute(), the_title_rss(), wp_link_pages()

Template_Tags/comment_class

See also index of Function Reference and index of Template Tags.
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