PHP图片上传
Notice: Use of undefined constant tmp_name - assumed 'tmp_name' in E:\www\30311\add.php on line 46

Warning: mkdir() [function.mkdir]: Permission denied in E:\www\30311\add.php on line 69

Notice: Use of undefined constant extension - assumed 'extension' in E:\www\30311\add.php on line 74

Warning: move_uploaded_file(upload/1331530339.jpg) [function.move-uploaded-file]: failed to open stream: No such file or directory in E:\www\30311\add.php on line 82

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move 'C:\WINDOWS\Temp\php19E5.tmp' to 'upload/1331530339.jpg' in E:\www\30311\add.php on line 82
移动文件出错！

------解决方案--------------------
没设置允许上传的权限吧，说你mkdir()被拒，有extension未打开
------解决方案--------------------
Notice: Use of undefined constant tmp_name
注意：使用了没有定义的常量 tmp_name

解决方法： 给它加上'tmp_name' 引号。或者可以通过设置php.ini关闭Notice错误级别(就可以使用[tmp_name]了)。

Warning: mkdir() [function.mkdir]: Permission denied
警告： 访问被拒绝。请确认对当前目录有权限。

failed to open stream: No such file or directory
请检查路径是否有问题。