通过使用通配符API PHP从S3中删除 [英] delete from S3 using api php using wildcard

问题描述

我有这方面的工作code从S3删除的文件和文件夹。 你会怎么删除使用通配符*？

  $ S3 =新AmazonS3（）;

$桶='mybucket';
$文件夹='myDirectory / *'; //这行不通

$响应= $ S3-＆GT; get_object_list（$桶，阵列（
   'preFIX'=＆GT; $文件夹
））;

的foreach（$响应为$ V）{
    $ S3-＆GT; delete_object（$桶，$ V）;
}
 

解决方案

presumably的使用通配符* 的表示要删除所有对象一次，而不是一次一个？

这通过<一个是可能的href="http://docs.amazonwebservices.com/AWSSDKforPHP/latest/#m=AmazonS3/delete_all_objects">delete_all_objects($bucket, $ PCRE），其中 $ PCRE 是一个可选的 Perl兼容的正防爆pression（PCRE）来筛选对（默认为 PCRE_ALL ，这是/.*/我），例如：

  $ S3 =新AmazonS3（）;
$响应= $ S3-＆GT; delete_all_objects（$桶，#myDirectory /.*#）;
 

我选择了＃而不是通常的 / 的模式封闭分隔符，以避免逃脱（不是问题在这里的单斜线，但它得到的凌乱很快用于更复杂的情况下），请参见分隔符有关详细信息。

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实现注意

请注意，删除多个对象没有可能过去在亚马逊S3 API级和模拟在 AWS SDK的PHP 与for循环中的 delete_all_objects（）为好，也就是说，它使用的每个对象还是一个请求;幸运的是，亚马逊终于推出了亚马逊S3 - 多目标删除在2011年12月：

  

亚马逊S3的新多目标删除使您能够以   从S3斗与单个请求删除多达1000个对象。

支持的 S3多对象中删除的已加入的 AWS SDK的PHP 的此后不久，因此，看到的 AWS SDK的PHP 1.4.8的Zanarkand：

  

该AmazonS3类现在，您可以删除多个亚马逊S3对象   使用一个HTTP请求。这已被公开为   delete_objects（）方法，和delete_all_objects（）和   delete_all_object_versions（）方法已被重写，以利用这个新的亚马逊S3的功能。

有一个专用的多对象的示例删除（即不使用通配符）显示，以及：

  $ S3 =新AmazonS3（）;
$响应= $ S3-＆GT; delete_objects（$桶，阵列（
    '对象'=＆GT;阵列（
        阵列（'键'=＆GT;'FILE1.TXT），
        阵列（'键'=＆GT;'FILE2.TXT），
    ）
））;
 

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i have this working code to delete files and folders from s3. how would you delete using wildcard * ?

$s3 = new AmazonS3();

$bucket = 'mybucket';
$folder = 'myDirectory/*';// this doesnt work

$response = $s3->get_object_list($bucket, array(
   'prefix' => $folder
));

foreach ($response as $v) {
    $s3->delete_object($bucket, $v);
}

解决方案

Presumably using wildcard * means you want to delete all objects at once rather than one at a time?

This is possible via delete_all_objects($bucket, $pcre), where $pcreis an optional Perl-Compatible Regular Expression (PCRE) to filter the names against (default is PCRE_ALL, which is "/.*/i"), e.g.:

$s3 = new AmazonS3();
$response = $s3->delete_all_objects($bucket, "#myDirectory/.*#");

I've chosen # rather than the usual / as the pattern enclosing delimiter to avoid escaping (not a problem with the single slash here, but it get's messy soon for more complex cases), see Delimiters for details.

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Implementation Note

Please note that deleting multiple objects had not been possible in the past at the Amazon S3 API level and simulated in the AWS SDK for PHP with a for loop within delete_all_objects() as well, i.e. it used one request per object still; fortunately, Amazon has finally introduced Amazon S3 - Multi-Object Delete in December 2011:

Amazon S3's new Multi-Object Delete gives you the ability to delete up to 1000 objects from an S3 bucket with a single request.

Support for S3 Multi Object Delete has been added to the AWS SDK for PHP shortly thereafter accordingly, see AWS SDK for PHP 1.4.8 "Zanarkand":

The AmazonS3 class now allows you to delete multiple Amazon S3 objects using a single HTTP request. This has been exposed as the delete_objects() method, and the delete_all_objects() and delete_all_object_versions() methods have been rewritten to leverage this new Amazon S3 feature.

An example for a dedicated multi-object delete (i.e. without wildcards) is shown as well:

$s3 = new AmazonS3();
$response = $s3->delete_objects($bucket, array(
    'objects' => array(
        array('Key' => 'file1.txt'),
        array('Key' => 'file2.txt'),
    )
));

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