学步园

<?<br /> $url = 'http://tools.jb51.net/abc/de/fg.php?id=1';<br /> echo getExt($url);<br /> function getExt($url)<br /> {<br /> $path=parse_url($url);<br /> //print_r($path);<br /> $str=explode('.',$path['path']);<br /> return $str[1];<br /> }</p> <p>?>