Filesystem组件

use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Filesystem\Exception\IOExceptionInterface;
 
$fs = new Filesystem();
 
try {
    $fs->mkdir('/tmp/random/dir/'.mt_rand());
} catch (IOExceptionInterface $e) {
    echo "An error occurred while creating your directory at ".$e->getPath();
}

$fs->mkdir('/tmp/photos', 0700);

// this directory exists, return true / 目录存在，返回true
$fs->exists('/tmp/photos');
 
// rabbit.jpg exists, bottle.png does not exists, return false
// rabbit.jpg存在，bottle.png不存在，返回false
$fs->exists(array('rabbit.jpg', 'bottle.png'));

// works only if image-ICC has been modified after image.jpg
// 只在image-ICC的修改日期晚于image.jpg时才执行
$fs->copy('image-ICC.jpg', 'image.jpg');
 
// image.jpg will be overridden / image.jpg被覆盖了
$fs->copy('image-ICC.jpg', 'image.jpg', true);

// set modification time to the current timestamp
$fs->touch('file.txt');
// set modification time 10 seconds in the future
$fs->touch('file.txt', time() + 10);
// set access time 10 seconds in the past
$fs->touch('file.txt', time(), time() - 10);

// set the owner of the lolcat video to www-data
// 设置lolcat视频文件的owner为www-data
$fs->chown('lolcat.mp4', 'www-data');
// change the owner of the video directory recursively
// 递归地改变视频目录的owner
$fs->chown('/video', 'www-data', true);

// set the group of the lolcat video to nginx
$fs->chgrp('lolcat.mp4', 'nginx');
// change the group of the video directory recursively
$fs->chgrp('/video', 'nginx', true);

// set the mode of the video to 0600 / 把视频设为0600模式
$fs->chmod('video.ogg', 0600);
// change the mod of the src directory recursively
// 递归地改变src目录的mod
$fs->chmod('src', 0700, 0000, true);

$fs->remove(array('symlink', '/path/to/directory', 'activity.log'));

// rename a file
$fs->rename('/tmp/processed_video.ogg', '/path/to/store/video_647.ogg');
// rename a directory
$fs->rename('/tmp/files', '/path/to/store/files');

// create a symbolic link / 创建一个symbolic link
$fs->symlink('/path/to/source', '/path/to/destination');
// duplicate the source directory if the filesystem
// does not support symbolic links
// 复制source目录，如果文件系统不支持symbolic links
$fs->symlink('/path/to/source', '/path/to/destination', true);

// returns '../'
$fs->makePathRelative(
    '/var/lib/symfony/src/Symfony/',
    '/var/lib/symfony/src/Symfony/Component'
);
// returns 'videos/'
$fs->makePathRelative('/tmp/videos', '/tmp')

$fs->mirror('/path/to/source', '/path/to/target');

// return true
$fs->isAbsolutePath('/tmp');
// return true
$fs->isAbsolutePath('c:\\Windows');
// return false
$fs->isAbsolutePath('tmp');
// return false
$fs->isAbsolutePath('../dir');

$fs->dumpFile('file.txt', 'Hello World');