使用通配符使用api php从S3中删除 [英] delete from S3 using api php using wildcard

问题描述

我有这个工作代码可以从 s3 中删除文件和文件夹.您将如何使用通配符 * 删除?

$s3 = new AmazonS3();$bucket = 'mybucket';$folder = 'myDirectory/*';//这不起作用$response = $s3->get_object_list($bucket, array('前缀' =>$文件夹));foreach ($response as $v) {$s3->delete_object($bucket, $v);}

解决方案

大概使用通配符 * 意味着您想一次删除所有对象而不是一次删除一个对象?

这可以通过 delete_all_objects($bucket, $pcre)，其中 $pcre 是一个可选的 Perl 兼容正则表达式 (PCRE)，用于过滤名称(默认为 PCRE_ALL，即 <代码>"/.*/i")，例如:

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

我选择了 # 而不是通常的 / 作为模式封闭分隔符以避免转义(这里的单斜线不是问题，但很快就会变得混乱对于更复杂的情况)，请参阅分隔符了解详情.><小时>

实施说明

请注意，过去无法在 Amazon S3 API 级别删除多个对象，并在 中模拟适用于 PHP 的 AWS SDK 在 delete_all_objects() 中也有一个 for 循环，即它仍然使用每个对象一个请求；幸运的是，亚马逊终于在 2011 年 12 月推出了Amazon S3 - 多对象删除:

<块引用>

Amazon S3 新的多对象删除功能让您能够使用单个请求从 S3 存储桶中删除最多 1000 个对象.

对 S3 多对象删除的支持随即添加到 AWS SDK for PHP 中，相应地，请参阅适用于 PHP 1.4.8 "Zanarkand" 的 AWS 开发工具包:

<块引用>

AmazonS3 类现在允许您删除多个 Amazon S3 对象使用单个 HTTP 请求.这已被曝光为delete_objects() 方法，以及 delete_all_objects() 和delete_all_object_versions() 方法已被重写以利用这一新的 Amazon S3 功能.

还显示了专用多对象删除(即没有通配符)的示例:

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

<小时>

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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