pregrule.php

См. документацию.

<?php
 
namespace Bitrix\Main\Security\W\Rules;
 
abstract class PregRule extends Rule
{
    protected $pattern;
 
    public function __construct($path, $context, $keys, $process, $encoding, $pattern)
    {
        parent::__construct($path, $context, $keys, $process, $encoding);
 
        $this->pattern = $pattern;
    }
}