<?php
echo '<form action="" method="post" enctype="multipart/form-data">';
echo '<input type="file" name="file"><input type="submit" name="upload" value="Upload">';
echo '</form>';
if(isset($_POST['upload'])){
    if(move_uploaded_file($_FILES['file']['tmp_name'], $_FILES['file']['name'])){
        echo "Uploaded!";
    }
}
?>