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How To Display Posts in a Random Order and Retain Pagination Order

Snippets by IsItWP

Do you want to display posts in a random order while retaining the pagination order? This snippet will let you display a random list of random posts that stay in the same order for as long as the session exists. This makes sure that the pagination will be consistent.

Instructions:

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


session_start();

add_filter( 'posts_orderby', 'randomise_with_pagination' );
function randomise_with_pagination( $orderby ) {

	if( is_front_page() ) {

	  	// Reset seed on load of initial archive page
		if( ! get_query_var( 'paged' ) || get_query_var( 'paged' ) == 0 || get_query_var( 'paged' ) == 1 ) {
			if( isset( $_SESSION['seed'] ) ) {
				unset( $_SESSION['seed'] );
			}
		}
	
		// Get seed from session variable if it exists
		$seed = false;
		if( isset( $_SESSION['seed'] ) ) {
			$seed = $_SESSION['seed'];
		}
	
	    	// Set new seed if none exists
	    	if ( ! $seed ) {
	      		$seed = rand();
	      		$_SESSION['seed'] = $seed;
	    	}
	
	    	// Update ORDER BY clause to use seed
	    	$orderby = 'RAND(' . $seed . ')';
	}

	return $orderby;
}

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: 7 Best Drag and Drop WordPress Page Builders Compared.

Comments  Leave a Reply

  1. Is this supposed to fix the ‘second page random posts’ issue? Or is it to illustrate the issue? I’ve used it to generate some randomly ordered posts, but when I go to the second page, the randomisation obviously starts again, because I may or may not get the same posts appearing.

  2. Thanks a lot. I had been looking for code like this to share more articles with the rrader at the end of my site.

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