val_image_size.php

См. документацию.

<?php
 
IncludeModuleLangFile(__FILE__);
 
class CFormValidatorImageSize
{
    public static function GetDescription()
    {
        return array(
            "NAME" => "image_size", // unique validator string ID
            "DESCRIPTION" => GetMessage('FORM_VALIDATOR_IMAGE_SIZE_DESCRIPTION'), // validator description
            "TYPES" => array("image"), //  list of types validator can be applied.
            "SETTINGS" => array("CFormValidatorImageSize", "GetSettings"), // method returning array of validator settings, optional
            "CONVERT_TO_DB" => array("CFormValidatorImageSize", "ToDB"), // method, processing validator settings to string to put to db, optional
            "CONVERT_FROM_DB" => array("CFormValidatorImageSize", "FromDB"), // method, processing validator settings from string from db, optional
            "HANDLER" => array("CFormValidatorImageSize", "DoValidate") // main validation method
        );
    }
 
    public static function GetSettings()
    {
        return array(
            "WIDTH_FROM" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_IMAGE_SIZE_SETTINGS_WIDTH_FROM"),
                "TYPE" => "TEXT",
                "DEFAULT" => "0",
            ),
 
            "WIDTH_TO" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_IMAGE_SIZE_SETTINGS_WIDTH_TO"),
                "TYPE" => "TEXT",
                "DEFAULT" => "768",
            ),
 
            "HEIGHT_FROM" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_IMAGE_SIZE_SETTINGS_HEIGHT_FROM"),
                "TYPE" => "TEXT",
                "DEFAULT" => "0",
            ),
 
            "HEIGHT_TO" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_IMAGE_SIZE_SETTINGS_HEIGHT_TO"),
                "TYPE" => "TEXT",
                "DEFAULT" => "1024",
            ),
        );
    }
 
    public static function ToDB($arParams)
    {
        $arParams["WIDTH_FROM"] = intval($arParams["WIDTH_FROM"]);
        $arParams["WIDTH_TO"] = intval($arParams["WIDTH_TO"]);
 
        if ($arParams["WIDTH_FROM"] > $arParams["WIDTH_TO"])
        {
            $tmp = $arParams["WIDTH_FROM"];
            $arParams["WIDTH_FROM"] = $arParams["WIDTH_TO"];
            $arParams["WIDTH_TO"] = $tmp;
        }
 
        $arParams["HEIGHT_FROM"] = intval($arParams["HEIGHT_FROM"]);
        $arParams["HEIGHT_TO"] = intval($arParams["HEIGHT_TO"]);
 
        if ($arParams["HEIGHT_FROM"] > $arParams["HEIGHT_TO"])
        {
            $tmp = $arParams["HEIGHT_FROM"];
            $arParams["HEIGHT_FROM"] = $arParams["HEIGHT_TO"];
            $arParams["HEIGHT_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;
 
        if (count($arValues) > 0)
        {
            foreach ($arValues as $arImage)
            {
                // if image successfully uploaded
                if (
                    $arImage["tmp_name"] <> ''
                    && ($arImageInfo = CFile::GetImageSize($arImage["tmp_name"]))
                )
                {
                    // check minimum image width
                    if ($arParams["WIDTH_FROM"] > 0 && $arImageInfo[0] < $arParams["WIDTH_FROM"])
                    {
                        $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_IMAGE_SIZE_ERROR_WIDTH_LESS"));
                        return false;
                    }
 
                    // check maximum image width
                    if ($arParams["WIDTH_TO"] > 0 && $arImageInfo[0] > $arParams["WIDTH_TO"])
                    {
                        $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_IMAGE_SIZE_ERROR_WIDTH_MORE"));
                        return false;
                    }
 
                    // check minimum image height
                    if ($arParams["HEIGHT_FROM"] > 0 && $arImageInfo[1] < $arParams["HEIGHT_FROM"])
                    {
                        $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_IMAGE_SIZE_ERROR_HEIGHT_LESS"));
                        return false;
                    }
 
                    // check maximum image height
                    if ($arParams["HEIGHT_TO"] > 0 && $arImageInfo[1] > $arParams["HEIGHT_TO"])
                    {
                        $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_IMAGE_SIZE_ERROR_HEIGHT_MORE"));
                        return false;
                    }
                }
            }
        }
 
        return true;
    }
}
 
AddEventHandler("form", "onFormValidatorBuildList", array("CFormValidatorImageSize", "GetDescription"));