好的，我试图在允许脚本使用mkdir（）时搞砸了我的权限。这是我的许可目前显示的 - 可以以某种方式告诉我他们应该是什么以恢复正常？
XAMPP /：
drwxr-xr-x 8 root admin 272 Feb 27 2010 XAMPP
drwxr-xr-x 3 username admin 102 Feb 27 2010 XAMPP Control.app
lrwxr-xr-x 1 username admin 18 Oct 26 2010 cgi-bin -> xamppfiles/cgi-bin
lrwxr-xr-x 1 username admin 14 Oct 26 2010 etc -> xamppfiles/etc
lrwxr-xr-x 1 username admin 17 Oct 26 2010 htdocs -> xamppfiles/htdocs
lrwxr-xr-x 1 username admin 15 Oct 26 2010 logs -> xamppfiles/logs
drwxr-xr-x 24 root admin 816 Feb 26 13:30 xamppfiles
xamppfiles /：
drwxr-xr-x 258 root admin 8772 Feb 27 2010 bin
drwxr-xr-x 4 root admin 136 Feb 27 2010 cgi-bin
drwxr-xr-x 3 root admin 102 Feb 27 2010 doc
drwxr-xr-x 23 root admin 782 Feb 27 2010 error
drwxr-xr-x 24 root admin 816 Feb 27 2010 etc
drwxr-xr-x+ 15 root admin 510 Feb 26 13:59 htdocs
drwxr-xr-x 160 root admin 5440 Feb 27 2010 icons
drwxr-xr-x 137 root admin 4658 Feb 27 2010 lib
drwxr-xr-x 2 root admin 68 Feb 27 2010 libexec
drwxr-xr-x 33 root admin 1122 Feb 27 2010 licences
drwxr-xr-x 8 root admin 272 Feb 26 12:00 logs
drwxr-xr-x 75 root admin 2550 Feb 27 2010 modules
drwxr-xr-x 99 root admin 3366 Feb 27 2010 phpmyadmin
drwxr-xr-x 8 root admin 272 Feb 27 2010 sbin
drwxr-xr-x+ 2 root admin 68 Feb 26 13:30 session
drwxr-xr-x 16 root admin 544 Feb 27 2010 share
drwxr-xr-x 29 root admin 986 Feb 27 2010 sql-bench
drwxr-xr-x+ 4 root admin 136 Feb 26 12:51 temp
drwxr-xr-x 3 root admin 102 Feb 27 2010 var
-rwxr-xr-x 1 root admin 14339 Feb 27 2010 xampp
-rw-r--r-- 1 root admin 6385 Feb 27 2010 xampp.pot
在htdocs / testsession /：
drwxr-xr-x+ 3 root admin 102 Feb 26 14:01 testsession
-rw-r--r--@ 1 root admin 957 Feb 26 14:16 index.php
我的testsession / index.php：
<?php
// Set the error reporting level
error_reporting(E_ALL);
ini_set("display_errors", 1);
// Start a PHP session
session_start();
?>
和错误：
/Applications/XAMPP/xamppfiles/session
Warning: session_start() [function.session-start]: open(/Applications/XAMPP/xamppfiles/temp//sess_1b9827985300349847f0169f1031b113, O_RDWR) failed: Permission denied (13) in /Applications/XAMPP/xamppfiles/htdocs/testsession/index.php on line 10
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /Applications/XAMPP/xamppfiles/htdocs/testsession/index.php:7) in /Applications/XAMPP/xamppfiles/htdocs/testsession/index.php on line 10
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /Applications/XAMPP/xamppfiles/htdocs/testsession/index.php:7) in /Applications/XAMPP/xamppfiles/htdocs/testsession/index.php on line 10
Warning: Unknown: open(/Applications/XAMPP/xamppfiles/temp//sess_1b9827985300349847f0169f1031b113, O_RDWR) failed: Permission denied (13) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/Applications/XAMPP/xamppfiles/temp/) in Unknown on line 0
答案 0 :(得分：5)
chmod -R o+w ...../temp甚至更好（更安全）chown -R apache.apache ......./temp（将apache替换为您的网络服务器正在使用的用户/组名。）
答案 1 :(得分：0)
我和其他人一起收到了同样的错误信息。经过多次悲痛之后，解决方案就是......只需重新启动XAMPP。希望能帮到别人！
Warning: session_start(): open(/var/folders/zw/hdfw48qd25xcch5sz9dd3w600000gn/T/sess_f8bgs41qn3fk6d95s0pfps60n4, O_RDWR) failed: Permission denied (13) in /Applications/XAMPP/xamppfiles/htdocs/foo/bar.php on line 3
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /Applications/XAMPP/xamppfiles/htdocs/foo/bar.php:3) in /Applications/XAMPP/xamppfiles/htdocs/foo/bar.php on line 3
Warning: Unknown: open(/var/lib/php/session/sess_isu2r2bqudeosqvpoo8a67oj02, O_RDWR) failed: Permission denied (13) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0
答案 2 :(得分：0)
chown对我不起作用。相反，我必须用chmod更改权限（/ Applications / XAMPP / xamppfiles / temp文件夹sudo chmod 755似乎对我有效（在chown'ing之后）
答案 3 :(得分：0)
我使用XAMPP的MAC OS出现了确切的问题。
通过从/ Application / XAMPP / xampfiles / temp /中删除会话文件解决了问题（无论会话ID是什么-都会出现错误消息，并且您将找到具有相同名称的文件）
In your case : Applications/XAMPP/xamppfiles/temp/1b9827985300349847f0169f1031b113
so remove file : 1b9827985300349847f0169f1031b113
我认为此问题是由于会话处于活动状态时移动htdocs文件夹中的某些文件夹/重新命名而引起的，似乎对引起冲突的mac用户而言。