PHP - 上传文件错误 - 权限被拒绝

i am trying to run this simple php code:

<?php

$dir = getcwd()."\uploads\ ";
if($_FILES['myfile']['error'] != 0)
{   
    echo "Error uploading the file: {$_FILES['myfile']['error']}";   
}

if(move_uploaded_file($_FILES['myfile']['tmp_name'], $dir . $_FILES['myfile']['name'])) {   
    echo 'Success!!!';   
} else {   
    echo 'Error.';   
}

?>

I am getting this problem:

failed to open stream: Permission denied in... on line 7 Unable to move ... to ... on line 7

Line 7 is: move_uploaded_file

I understand that maybe the problem is with the folder permission, and i need to use CHMODE command. But i don't understand how to use it and where do i put it in my code.

Use slashes /instead of backslashes. And check permissions to target dir.

$dir = getcwd() . "/uploads/";

Well, you can call chmod() before the line with move_uploaded_file() for example like this

chmod($dir, 755);

You can find more information about chmod() on the documentation sites