blocks|key|312315|text|下面的内容应该会有所帮助|type|unstyled|depth|inlineStyleRanges|entityRanges|data|312316|312317|realpath+-返回规范化的绝对pathname|unordered-list-item|offset|length|style|CODE|312318|is_writable+-告诉文件名是否为writable|312319|unlink+-删除文件|312320|312321|通过realpath运行文件路径，然后检查返回的路径是否可写，如果可写，则取消链接。|312322|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/realpath|1|http://php.net/is_writable|2|http://php.net/unlink^0|0|0|0|8|0|8|0|0|0|B|0|B|1|0|0|6|0|6|2|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|14|8|@$F|15|G|16|H|I]]|9|@$F|17|G|18|1|19]]|A|$]]|$1|J|3|K|5|E|7|1A|8|@$F|1B|G|1C|H|I]]|9|@$F|1D|G|1E|1|1F]]|A|$]]|$1|L|3|M|5|E|7|1G|8|@$F|1H|G|1I|H|I]]|9|@$F|1J|G|1K|1|1L]]|A|$]]|$1|N|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1N|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]|Y|$5|T|U|V|A|$W|Z]]|10|$5|T|U|V|A|$W|11]]]]

The following should help

<ul>
<li><a href="http://php.net/realpath" rel="noreferrer"><code>realpath</code></a> — Returns canonicalized absolute pathname</li>
<li><a href="http://php.net/is_writable" rel="noreferrer"><code>is_writable</code></a> — Tells whether the filename is writable</li>
<li><a href="http://php.net/unlink" rel="noreferrer"><code>unlink</code></a> — Deletes a file</li>
</ul>

Run your filepath through realpath, then check if the returned path is writable and if so, unlink it.

blocks|key|312324|text|$files+=+[
++++'./first.jpg',
++++'./second.jpg',
++++'./third.jpg'
];

foreach+($files+as+$file)+{
++++if+(file_exists($file))+{
++++++++unlink($file);
++++}+else+{
++++++++//+File+not+found.
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|312325|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$files = [
 './first.jpg',
 './second.jpg',
 './third.jpg'
];

foreach ($files as $file) {
 if (file_exists($file)) {
 unlink($file);
 } else {
 // File not found.
 }
}
</code></pre>

blocks|key|315408|text|首先检查您对该文件的权限，以确保您可以a)从脚本中看到它，以及b)能够删除它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|315409|您还可以使用从当前运行脚本的目录计算得出的路径，例如：|315410|unlink(dirname(__FILE__)+.+"/../../public_files/"+.+$filename);|code-block|syntax|javascript|315411|(在PHP5.3中，我相信你可以使用__DIR__常量而不是dirname()，但我自己还没有用过它)|offset|length|style|CODE|315412|entityMap^0|0|0|0|I|7|U|9|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@$K|U|L|V|M|N]|$K|W|L|X|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

Check your permissions first of all on the file, to make sure you can a) see it from your script, and b) are able to delete it.

You can also use a path calculated from the directory you're currently running the script in, eg:

<pre><code>unlink(dirname(__FILE__) . "/../../public_files/" . $filename);
</code></pre>

(in PHP 5.3 I believe you can use the <code>__DIR__</code> constant instead of <code>dirname()</code> but I've not used it myself yet)

blocks|key|3058063|text|您可以使用以下命令删除该文件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3058064|unlink($Your_file_path);|code-block|syntax|javascript|3058065|但是如果你要从http路径中删除一个文件，那么这个解除链接是不能正常工作的。您必须提供正确的文件路径。|3058066|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You can delete the file using 

<pre><code>unlink($Your_file_path);
</code></pre>

but if you are deleting a file from it's http path then this unlink is not work proper. You have to give a file path correct.

blocks|key|3271378|text|AIO解决方案，处理一切，这不是我的工作，但我只是提高了自己。享受吧！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3271379|/**
+*+Unlink+a+file,+which+handles+symlinks.
+*+@see+https://github.com/luyadev/luya/blob/master/core/helpers/FileHelper.php
+*+@param+string+$filename+The+file+path+to+the+file+to+delete.
+*+@return+boolean+Whether+the+file+has+been+removed+or+not.
+*/
function+unlinkFile+(+$filename+)+{
++++//+try+to+force+symlinks
++++if+(+is_link+($filename)+)+{
++++++++$sym+=+@readlink+($filename);
++++++++if+(+$sym+)+{
++++++++++++return+is_writable+($filename)+&&+@unlink+($filename);
++++++++}
++++}

++++//+try+to+use+real+path
++++if+(+realpath+($filename)+&&+realpath+($filename)+!==+$filename+)+{
++++++++return+is_writable+($filename)+&&+@unlink+(realpath+($filename));
++++}

++++//+default+unlink
++++return+is_writable+($filename)+&&+@unlink+($filename);
}|code-block|syntax|javascript|3271380|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

AIO solution, handles everything, It's not my work but I just improved myself. Enjoy!



<pre><code>/**
 * Unlink a file, which handles symlinks.
 * @see https://github.com/luyadev/luya/blob/master/core/helpers/FileHelper.php
 * @param string $filename The file path to the file to delete.
 * @return boolean Whether the file has been removed or not.
 */
function unlinkFile ( $filename ) {
 // try to force symlinks
 if ( is_link ($filename) ) {
 $sym = @readlink ($filename);
 if ( $sym ) {
 return is_writable ($filename) &amp;&amp; @unlink ($filename);
 }
 }

 // try to use real path
 if ( realpath ($filename) &amp;&amp; realpath ($filename) !== $filename ) {
 return is_writable ($filename) &amp;&amp; @unlink (realpath ($filename));
 }

 // default unlink
 return is_writable ($filename) &amp;&amp; @unlink ($filename);
}
</code></pre>

blocks|key|317511|text|我知道这个问题有点老了，但这是一个简单的方法，可以很好地从我正在处理的项目中删除图像。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|317512|unlink(dirname(__FILE__)+.+"/img/tasks/"+.+'image.jpg');|code-block|syntax|javascript|317513|dirname(__FILE__)部分打印出项目的基本路径。/img/tasks/是我的基本路径下面的两个文件夹。最后，这是我想要删除的图像，你可以把它做成任何你需要的东西。|offset|length|style|CODE|317514|有了这个，我没有任何问题，我的文件在我的服务器和删除他们。|317515|entityMap^0|0|0|0|H|U|B|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

I know this question is a bit old, but this is something simple that works for me very well to delete images off my project I'm working on.

<pre><code>unlink(dirname(__FILE__) . "/img/tasks/" . 'image.jpg');
</code></pre>

The <code>dirname(__FILE__)</code> section prints out the base path to your project. The <code>/img/tasks/</code> are two folders down from my base path. And finally, there's my image I want to delete which you can make into anything you need to.

With this I have not had any problem getting to my files on my server and deleting them.

How do I delete a file from my server with PHP if the file is in another directory? 

Here is my page layout:

<ul>
<li><code>projects/backend/removeProjectData.php</code> (this file deletes all my entries for the database and should also delete the related file)</li>
<li><code>public_files/22.pdf</code> (the place where the file is located.) </li>
</ul>

I'm using the <code>unlink</code> function:

<code>unlink('../../public_files/' . $fileName);</code>

But this always gives me an error that the file does not exist. Any ideas?

How to delete a file via PHP?

数据库

服务器

如果文件在另一个目录中，我如何用PHP从我的服务器上删除该文件？下面是我的页面布局：projects/backend/removeProjectData.php (此文件将删除我在数据库中的所有条目，还应删除相关的file)public_files/22.pdf (文件所在的位置)。) 我使用了unlink函数：unlink('../../public_files/' . $fileName);但

问如何通过PHP删除文件？
EN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何通过PHP删除文件？EN

回答 6

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何通过PHP删除文件？
EN