pregreplacerule.php

См. документацию.

<?php
 
namespace Bitrix\Main\Security\W\Rules;
 
use Bitrix\Main\Text\StringHelper;
use Bitrix\Main\Security\W\Rules\Results\ModifyResult;
 
class PregReplaceRule extends PregRule
{
    public function evaluate($value)
    {
        if (!StringHelper::isStringable($value))
        {
            return new ModifyResult('');
        }
 
        $replaced = preg_replace($this->pattern, '', (string) $value);
 
        if ($replaced !== (string) $value)
        {
            return new ModifyResult($replaced);
        }
 
        return true;
    }
}