“取消链接”不适用于本地 WordPress 实例？
我正在尝试修改一个插件，以便可以使用 html 链接删除目录中的图像文件。我的代码输出一个表格，其中包含图像缩略图、图像链接和删除文件的链接：
<?php
$dirname = "../wp-content/themes/teenclub/images/slider/";
$images = scandir($dirname);
$ignore = array(".", "..", ".DS_Store");
foreach($images as $curimg){
if(!in_array($curimg, $ignore)) {
echo "<tr ><td><img width='200' src='$dirname$curimg'/></td><td><a href='$dirname$curimg'/>$curimg</a></td><td><a href='../wp-content/plugins/wp-easy-uploader/delete.php?file=$curimg'>Delete</a></td></tr>";
};
}
?>
delete.php：
<?php
$dir = '/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com';
$file = $dir.'/'.$_GET["file"];
if(is_writable($file)) {
unlink($file);
} else {
echo 'you dont have perms dude';
}
?>
我收到消息说我没有权限，但我已将所有文件更改为 777另外，MAMP 的 php_error.log 给了我这个：
[01-Feb-2012 21:10:13] PHP Warning: unlink(../wp-content/themes/teenclub/images/slider/kids.png) [<a href='function.unlink'>function.unlink</a>]: No such file or directory in /Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/wp-content/plugins/wp-easy-uploader/delete.php on line 4
目录和文件名是正确的，所以我只是不明白问题是什么......
I'm trying to modify a plugin so that image files from a directory can be deleted with an html link. My code spits out a table containing an image thumbnail, a link to the image, and a link to delete the file:
<?php
$dirname = "../wp-content/themes/teenclub/images/slider/";
$images = scandir($dirname);
$ignore = array(".", "..", ".DS_Store");
foreach($images as $curimg){
if(!in_array($curimg, $ignore)) {
echo "<tr ><td><img width='200' src='$dirname$curimg'/></td><td><a href='$dirname$curimg'/>$curimg</a></td><td><a href='../wp-content/plugins/wp-easy-uploader/delete.php?file=$curimg'>Delete</a></td></tr>";
};
}
?>
delete.php:
<?php
$dir = '/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com';
$file = $dir.'/'.$_GET["file"];
if(is_writable($file)) {
unlink($file);
} else {
echo 'you dont have perms dude';
}
?>
I get the message saying I don't have permission but I've chmod all the files to 777. In addition MAMP's php_error.log give me this:
[01-Feb-2012 21:10:13] PHP Warning: unlink(../wp-content/themes/teenclub/images/slider/kids.png) [<a href='function.unlink'>function.unlink</a>]: No such file or directory in /Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/wp-content/plugins/wp-easy-uploader/delete.php on line 4
The directory and file name are correct so I just don't understand what the problem is...
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你一定是目录写错了。
unlink显示文件位置../wp-content/themes/teenclub/images/slider/kids.png但您的目录设置为/Users/ edmcmanwich/Desktop/TEMP/dev.teenclub.com。因此，您的完整路径应为/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/../wp-content/themes/teenclub/images/slider/kids.png（或 < code>/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/kids.png 根据您的来源），根据您的错误消息，情况并非如此。运行
echo getcwd();查看删除脚本运行在哪个目录，您应该会看到文件路径不正确。或者，该文件已被删除，因此不存在。而且，这是非常不安全的，因为任何人都可以将他们想要的任何内容传递给
$_GET['file']并可能删除该文件。例如，如果您搞砸了/etc/passwd的权限，那么有人可以使用../../../../../../.. 删除它。 /../../../../../etc/passwd。You must have the directories wrong.
unlinkshows a file location of../wp-content/themes/teenclub/images/slider/kids.pngyet your directory is set as/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com. So, your full path should be/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/../wp-content/themes/teenclub/images/slider/kids.png(or/Users/edmcmanwich/Desktop/TEMP/dev.teenclub.com/kids.pngaccording to your source), which isn't the case according to your error message.Run
echo getcwd();to see what directory your delete script is running at, you should see that the file path is incorrect. Or, the file was already deleted and is therefore does not exist.Also, this is horribly insecure, as anybody can pass anything they want to
$_GET['file']and potentially delete the file. For example, if you screwed with the permissions on/etc/passwd, somebody could delete it with../../../../../../../../../../../../etc/passwd.好吧，您已经知道这是不好的做法，但是您遇到的问题很可能涉及您使用相对路径。
尝试使用
realpath包装文件路径看看是否能解决问题。另请注意，如果使用 null 参数调用 realpath，它将返回您肯定不想删除的当前目录。
有关详细信息，请参阅
unlink的文档和file://协议。Well, you already know that this is bad practice however the issue your running in to most likely involves your use of a relative path.
Try wrapping the file path with
realpathand see if that fixes the problem. Also be aware that if
realpathis called with a null argument it will return the current directory which you would most certainly not want to delete.For more information see the documentation for
unlinkand thefile://protocol.