权限被拒绝-PHP取消链接 [英] permission denied - php unlink

问题描述

我有两个文件: b.php和test.txt

I have two files: b.php and test.txt

<?php 
$b = "test.txt";
unlink($b);
?>

，错误是:警告:unlink(test.txt)[function.unlink]:权限被拒绝

and the error is: Warning: unlink(test.txt) [function.unlink]: Permission denied

为什么? b.php和test.txt是777，并且相同的组/登录名

why? b.php and test.txt is 777 and the same group/login

如果我在父目录上设置了777，则可以执行取消链接，但必须设置777，然后回到755?

if I set 777 on the parent directory I can execute unlink but i have to set 777 and back to 755?

推荐答案

您(在运行b.php的过程中，您通过CLI或通过网络服务器)需要对文件所在目录的写访问权限位于.您正在更新目录内容，因此对文件的访问是不够的.

You (as in the process that runs b.php, either you through CLI or a webserver) need write access to the directory in which the files are located. You are updating the directory content, so access to the file is not enough.

请注意，如果您使用PHP chmod()函数将文件或文件夹的模式设置为777，则应使用0777来确保将数字正确解释为八进制数字.

Note that if you use the PHP chmod() function to set the mode of a file or folder to 777 you should use 0777 to make sure the number is correctly interpreted as an octal number.

这篇关于权限被拒绝-PHP取消链接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！