val_file_type.php

См. документацию.

<?php
 
IncludeModuleLangFile(__FILE__);
 
class CFormValidatorFileType
{
    public static function GetDescription()
    {
        return array(
            "NAME" => "file_type", // unique validator string ID
            "DESCRIPTION" => GetMessage('FORM_VALIDATOR_FILE_TYPE_DESCRIPTION'), // validator description
            "TYPES" => array("file"), //  list of types validator can be applied.
            "SETTINGS" => array("CFormValidatorFileType", "GetSettings"), // method returning array of validator settings, optional
            "CONVERT_TO_DB" => array("CFormValidatorFileType", "ToDB"), // method, processing validator settings to string to put to db, optional
            "CONVERT_FROM_DB" => array("CFormValidatorFileType", "FromDB"), // method, processing validator settings from string from db, optional
            "HANDLER" => array("CFormValidatorFileType", "DoValidate") // main validation method
        );
    }
 
    public static function GetSettings()
    {
        return array(
            "EXT" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_EXT"),
                "TYPE" => "DROPDOWN",
                "VALUES" => array(
                    GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_TYPE_EXT_NONE"),
                    "doc,rtf,pdf,txt" => GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_EXT_DOCS"),
                    "rar,tar,gz,zip,7z,ace,kgb,arj" => GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_EXT_ARCH"),
                    "jpg,jpeg,bmp,gif,png" => GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_EXT_IMG"),
                ),
                "DEFAULT" => "",
            ),
 
            "EXT_CUSTOM" => array(
                "TITLE" => GetMessage("FORM_VALIDATOR_FILE_TYPE_SETTINGS_EXT_CUSTOM"),
                "TYPE" => "TEXT",
                "DEFAULT" => "",
            ),
        );
    }
 
    public static function ToDB($arParams)
    {
        return serialize($arParams);
    }
 
    public static function FromDB($strParams)
    {
        return unserialize($strParams, ['allowed_classes' => false]);
    }
 
    public static function DoValidate($arParams, $arQuestion, $arAnswers, $arValues)
    {
        global $APPLICATION;
 
        if (!empty($arValues))
        {
            $arExt = array();
            if ($arParams["EXT"] <> '')
                $arExt = array_merge($arExt, explode(",", mb_strtolower($arParams["EXT"])));
 
            if ($arParams["EXT_CUSTOM"] <> '')
                $arExt = array_merge($arExt, explode(",", mb_strtolower($arParams["EXT_CUSTOM"])));
 
            if (!empty($arExt))
            {
                foreach ($arExt as $key => $value) $arExt[$key] = trim($value);
                $arExt = array_unique($arExt);
                $arExtKeys = array_fill_keys($arExt, true);
                $res = true;
 
                foreach ($arValues as $arFile)
                {
                    if (empty($arFile) || !is_array($arFile))
                    {
                        continue;
                    }
                    if ($arFile["tmp_name"] <> '' && $arFile["error"] == "0")
                    {
                        $point_pos = mb_strrpos($arFile["name"], ".");
                        if ($point_pos === false)
                        {
                            $res = false;
                            break;
                        }
 
                        $ext = mb_strtolower(mb_substr($arFile["name"], $point_pos + 1));
                        if (!isset($arExtKeys[$ext]))
                        {
                            $res = false;
                            break;
                        }
                    }
                }
 
                if (!$res)
                {
                    $APPLICATION->ThrowException(GetMessage("FORM_VALIDATOR_FILE_TYPE_ERROR"));
                    return false;
                }
            }
        }
 
        return true;
 
    }
}
 
AddEventHandler("form", "onFormValidatorBuildList", array("CFormValidatorFileType", "GetDescription"));