atLeastOneOf - MODX FormIt Hook : at least one of validated field have to be correct

atLeastOneOf

<?php
/**
 * atLeastOneOf
 * 
 * Custom MODX FormIt hook to check if at least one of defined field is correctly filled
 * 
 * !!! To proper work have to be set on last validate field (phone in example)
 * 
 * Usage example:
 *  &customValidators=`atLeastOneOf`
 *  &validate=`name:required,
 *             email:email:required,
 *             phone:required:atLeastOneOf=^email|phone^`
 * 
 */ 

$value;
$one_of = explode('|', $param);

$any_error = true;

foreach ($one_of as $one_key) {
    if (!array_key_exists($one_key, $errors)) {
        $any_error = false;
    }
}

if (!$any_error) {
    foreach ($one_of as $one_key) {
        unset($validator->errors[$one_key]);
        unset($validator->errorsRaw[$one_key]);
    }
}