PHP警告：move_uploaded_file()无法移动

我一直在慢慢地学习 PHP,并且发现了一系列关于其他开发者发布的主题和解决方案的信息.我试图让一个 Android应用程序通过HTTP post将文件上传到PHP服务器.但是,我的服务器端尝试在PHP中写入文件时无法正常工作.

以下是PHP代码：

// Where the file is going to be placed
$target_path = "/var/www/media2net/uploads/uploads";

/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path = $target_path . basename($_FILES['uploadedfile']['name']);

if (move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path)) {
    echo "The file ".  basename( $_FILES['uploadedfile']['name']) .
        " has been uploaded";
    chmod("uploads/" . basename($_FILES['uploadedfile']['name']),755);
} else {
    echo "There was an error uploading the file,please try again!";
    echo "filename: " . basename( $_FILES['uploadedfile']['name']);
    echo " target_path: " .$target_path;
}

我已经从客户端检查线鲨知道http发送正确,我也确保我正在写文件的目录具有正确的权限,并且PHP安全模式被设置为关闭.

apache2的输出错误.log文件读取

[Wed Dec 05 09:25:36 2012] [error] [client 74.14.162.250] PHP Warning:  
move_uploaded_file(): Unable to move '/tmp/PHPVLOnn3' to  
'/var/www/media2net/uploads/downloaded_file.png' 
in /var/www/media2net/upload.PHP on line 9

任何帮助这个问题或进一步的方式来麻烦拍摄这将不胜感激.

$sudo chown apache:apache /var/www/media2net/uploads/
$sudo chmod 755 /var/www/media2net/uploads/

$sudo chown apache:apache /var/www/media2net/uploads/downloaded_file.png