WordPress: Add A/B Testing Functionality to Gravity Forms

shortcode_gravityforms_ab.php

<?php
// Add to your functions.php theme file
// Modified slightly from Mediacause so all you need to do is add _ab to your shortcode and then specify your forms
// Credit: https://mediacause.org/ab-testing-forms-using-gravity-forms/

function shortcode_gravityforms_ab($atts){
	$a = shortcode_atts( array(
		'id' => '',
		'title' => 'false',
		'description' => 'false',
		'ajax' => 'false'
	), $atts);
 
	$ids = explode(",", $a['id']);
	$count = count($ids) - 1;
	if($count > 0){
		$rand = mt_rand(0,$count);
		return do_shortcode('[gravityform id="'. $ids[$rand].'" title="'. $a['title']. '" description="'. $a['description'] .'" ajax="'. $a['ajax'] .'"]');
	}
}
add_shortcode('gravityform_ab', 'shortcode_gravityforms_ab');

?>