一些php代码，备份目录

备份目录

//备份
	public function todo(){
		//打包文件，将备份文件保存到backup文件夹
		$filename = date('YmdHis').'.php'; 
		$zip = new \ZipArchive();
		if($zip->open('backup/'.$filename, \ZIPARCHIVE::CREATE) !== TRUE) {
			die("无法创建 $filename");
		}
		$this->backup_folder('.', $zip);
		$zip->close();

		//获取备份文件的完整路径
		$filepath = realpath('backup/'.$filename);
	
		echo "备份成功！";
	}
	
	public function backup_folder($folder, $archive) {
		$folder .= '/';
		$files = glob($folder . '*', GLOB_MARK);
		foreach($files as $file) {
			if(is_dir($file)) {
				$this->backup_folder($file, $archive);
			} else {
				$archive->addFile($file);
			}
		}
	}