CFile::CheckImageFile

static function CheckImageFile($arFile, $iMaxSize=0, $iMaxWidth=0, $iMaxHeight=0, $access_typies=array(), $bForceMD5=false, $bSkipExt=false)
{
	if (!isset($arFile["name"]) || $arFile["name"] == "")
	{
		return "";
	}

	if (empty($arFile["tmp_name"]))
	{
		return GetMessage("FILE_BAD_FILE_TYPE").".
";
	}

	if (preg_match("#^(php://|phar://)#i", $arFile["tmp_name"]))
	{
		return GetMessage("FILE_BAD_FILE_TYPE").".
";
	}

	$file_type = GetFileType($arFile["name"]);

	// IMAGE by default
	$flashEnabled = false;
	if(!in_array($file_type, $access_typies))
	{
		$file_type = "IMAGE";
	}

	if($file_type == "FLASH")
	{
		$flashEnabled = true;
		static $flashMime = array("application/x-shockwave-flash", "application/vnd.adobe.flash.movie");
		$res = static::CheckFile($arFile, $iMaxSize, $flashMime, static::GetFlashExtensions(), $bForceMD5, $bSkipExt);
	}
	else
	{
		$res = static::CheckFile($arFile, $iMaxSize, "image/", static::GetImageExtensions(), $bForceMD5, $bSkipExt);
	}

	if($res <> '')
	{
		return $res;
	}

	$imgInfo = (new FileImage($arFile["tmp_name"]))->getInfo($flashEnabled);

	if($imgInfo)
	{
		$intWIDTH = $imgInfo->getWidth();
		$intHEIGHT = $imgInfo->getHeight();
	}
	else
	{
		return GetMessage("FILE_BAD_FILE_TYPE").".
";
	}

	//check for dimensions
	if($iMaxWidth > 0 && ($intWIDTH > $iMaxWidth || $intWIDTH == 0) || $iMaxHeight > 0 && ($intHEIGHT > $iMaxHeight || $intHEIGHT == 0))
	{
		return GetMessage("FILE_BAD_MAX_RESOLUTION")." (".$iMaxWidth." * ".$iMaxHeight." ".GetMessage("main_include_dots").").
";
	}

	return null;
}