val_text_len.php

См. документацию.

<?php
 
IncludeModuleLangFile(__FILE__);
 
class CFormValidatorTextLen
{
    public static function GetDescription()
    {
        return array(
            "NAME" => "text_len", // unique validator string ID
            "DESCRIPTION" => GetMessage('FORM_VALIDATOR_VAL_TEXT_LEN_DESCRIPTION'), // validator description
            "TYPES" => array("text", "textarea", "password", "email", "url"), //  list of types validator can be applied.
            "SETTINGS" => array("CFormValidatorTextLen", "GetSettings"), // method returning array of validator settings, optional
            "CONVERT_TO_DB" => array("CFormValidatorTextLen", "ToDB"), // method, processing validator settings to string to put to db, optional
            "CONVERT_FROM_DB" => array("CFormValidatorTextLen", "FromDB"), // method, processing validator settings from string from db, optional
            "HANDLER" => array("CFormValidatorTextLen", "DoValidate") // main validation method
        );
    }
 
    public static function GetSettings()
    {
        return array(
            "LENGTH_FROM" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_VAL_TEXT_LEN_SETTINGS_LENGTH_FROM"),
                "TYPE" => "TEXT",
                "DEFAULT" => "0",
            ),
 
            "LENGTH_TO" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_VAL_TEXT_LEN_SETTINGS_LENGTH_TO"),
                "TYPE" => "TEXT",
                "DEFAULT" => "100",
            ),
        );
    }
 
    public static function ToDB($arParams)
    {
        $arParams["LENGTH_FROM"] = intval($arParams["LENGTH_FROM"]);
        $arParams["LENGTH_TO"] = intval($arParams["LENGTH_TO"]);
 
        if ($arParams["LENGTH_FROM"] > $arParams["LENGTH_TO"])
        {
            $tmp = $arParams["LENGTH_FROM"];
            $arParams["LENGTH_FROM"] = $arParams["LENGTH_TO"];
            $arParams["LENGTH_TO"] = $tmp;
        }
 
        return serialize($arParams);
    }
 
    public static function FromDB($strParams)
    {
        return unserialize($strParams, ['allowed_classes' => false]);
    }
 
    public static function DoValidate($arParams, $arQuestion, $arAnswers, $arValues)
    {
        global $APPLICATION;
 
        foreach ($arValues as $value)
        {
            // check minimum length
            if (mb_strlen($value) < $arParams["LENGTH_FROM"])
            {
                $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_VAL_TEXT_LEN_ERROR_LESS"));
                return false;
            }
 
            // check maximum length
            if (mb_strlen($value) > $arParams["LENGTH_TO"])
            {
                $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_VAL_TEXT_LEN_ERROR_MORE"));
                return false;
            }
        }
 
        return true;
    }
}
 
AddEventHandler("form", "onFormValidatorBuildList", array("CFormValidatorTextLen", "GetDescription"));