Forminator - compare two e-mail fields if they are the same

forminator-compare-email-fields.php

<?php 

/************************************
*
* Forminator - compare two e-mail fields to confirm; if different, issue error
*
* by adamcz/WPMU DEV
* Tested with Forminator 1.15.12
*
* Use as MU plugin
*
* Adjust fields' IDs if needed to match your form
*
*********************************/

add_filter( 'forminator_custom_form_submit_errors', 'check_form_data', 99, 3 );
function check_form_data( $submit_errors, $form_id, $field_data_array ) {

	$email1 = $email2 = '';

	foreach( $field_data_array as $arr ) {

		if( $arr['name'] == 'email-1' ) $email1 = $arr['value'];
		if( $arr['name'] == 'email-2' ) $email2 = $arr['value'];

		if( '' != $email1 && '' != $email2 ) break;
	}

	if( $email1 != $email2 ) {
		$submit_errors[]['email-2'] = 'The email addresses must match!';
	}

	return $submit_errors;
}