static function GetImageSize($image_content,&$error = null,&$error_str = null){
		$temp = defined("TEMP") ? TEMP : "/tmp";
		$filename = $temp."/get_image_filename_".posix_getpid();
		if(!Files::WriteToFile($filename,$image_content,$error,$error_str)){ return null; }
		$out = getimagesize($filename);
		Files::Unlink($filename,$error,$error_str);
		if(!is_array($out)){ $out = null; }
		return $out;
	}