Formidable Forms: Set Entry Key as UUID

formidable-pro-uuid.php

<?php
/*
	Plugin Name: Formidable Forms UUID
	Plugin URI:  https://gist.github.com/ano/95f19663a9cf8126eca2009c970d7c24
	Description: Creates entry keys as UUIDv4 unique identifiers on form save.
	Version:     1.0.0
	Author:      Ano Tisam
	Author URI:  https://www.linkedin.com/in/ano-tisam-19b50614/
	License:     GPL2
	License URI: https://www.gnu.org/licenses/gpl-2.0.html
	Date:         7/4/2017
*/
/* 
 Change Entry Key to UUIDv4 
*/
add_filter('frm_validate_entry', 'change_entry_key', 20, 2);
function change_entry_key($errors, $values){
  if(($_POST['frm_action'] == 'create')){
    $_POST['item_key'] = guidv4();
  }
return $errors;
}

/* 
	Generate a version 4 UUID
*/
function guidv4()
{
    $data = openssl_random_pseudo_bytes(16);
    $data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0010
    $data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10
    return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}
?>