PHP5 文件系統抽象層：Gaufrette

Gaufrette 提供了一個文件系統的抽象層的PHP5庫。它使得以相同方式操控本地文件，FTP服務器，亞馬遜 S3等等。它允許你開發程序時，不用了解未來你將怎么訪問你的文件。

下面是如何緩存一個ftp文件系統的示例：

<?php

use Gaufrette\Filesystem;
use Gaufrette\Adapter\Ftp as FtpAdapter;
use Gaufrette\Adapter\Local as LocalAdapter;
use Gaufrette\Adapter\Cache as CacheAdapter;

// Locale Cache-Directory (e.g. '%kernel.root_dir%/cache/%kernel.environment%/filesystem') with create = true
$local = new LocalAdapter($cacheDirectory, true);
// FTP Adapter with a defined root-path
$ftp = new FtpAdapter($path, $host, $username, $password, $port);

// Cached Adapter with 3600 seconds time to live
$cachedFtp = new CacheAdapter($ftp, $local, 3600);

$filesystem = new Filesystem($cachedFtp);

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