How to Add Additional Classes to the Enclosing Div in the Loop

Do you want to add additional classes to the enclosing div for each post in the loop? It’s easy with our code snippet. Let’s take a look at how to do it.

Instructions:

All you have to do is add this code to your theme’s functions.php file or in a site-specific plugin:

<?php
function additional_post_classes( $classes ) {
	global $wp_query;

	if( $wp_query->found_posts < 1 ) {
		return $classes;
	}

	if( $wp_query->current_post == 0 ) {
		$classes[] = 'post-first';
	}

	if( $wp_query->current_post % 2 ) {
		$classes[] = 'post-even';
	} else {
		$classes[] = 'post-odd';
	}

	if( $wp_query->current_post == ( $wp_query->post_count - 1 ) ) {
		$classes[] = 'post-last';
	}

	return $classes;
}
add_filter( 'post_class', 'additional_post_classes' );
?>

Note: If this is your first time adding code snippets in WordPress, then please refer to our guide on how to properly copy / paste code snippets in WordPress, so you don’t accidentally break your site.

If you liked this code snippet, please consider checking out our other articles on the site like: Best WordPress Page Builders (Compared).