function _serveFile($key) {		ini_set("memory_limit","128M");		$file = $this->_data[$key];		if(isset($file) && !empty($file)) {			$ext = end(explode(".", $file));			$allowed = array("doc","rtf","txt","pdf","xls","jpg","png","tiff","jpeg");			//if(in_array($ext,$allowed)) {			if(1) {				switch($ext) {					case "txt":						$type = "text/plain";						break;					case "rtf":						$type = "application/rtf";						break;					case "doc":						$type = "application/msword";						break;					case "docx":						$type = "application/vnd.openxmlformats-officedocument.wordprocessingml.document";						break;						case "xls":						$type = "application/vnd.ms-excel";						break;					case "pdf":							$type = "appliction/pdf";						break;					case "png":							$type = "image/png";						break;						case "gif":							$type = "image/gif";						break;						case "jpg":					case "jpeg":							$type = "image/jpeg";						break;						case "tiff":							$type = "image/tiff";						break;							default:						$type = "application/octet-stream";						break;						}				$name = $this->_data['first_name']."_".$this->_data['last_name']."_".$key.".".$ext;				$tmp = $this->_createDecryptedTmpFile(UPLOAD_DIR.DS."files".DS.$file);												header("Pragma:public");				header("Expires:0"); 				header("Cache-Control:must-revalidate,post-check=0,pre-check=0"); 				header("Cache-Control:private",false);				header("Content-Type:application/force-download");				header("Content-Type:application/download");				header("Content-Description:File Transfer");				header("Content-type:".$type);				header("Content-disposition: attachment; filename=".$name);				header("Content-Length:".filesize($tmp));												echo file_get_contents($tmp);			} else {				echo "The file type $ext is not allowed";			}			}	}