更改课程网址

I prefer add to method getURL() in class URL

before:

if($tmp)$url.=(strpos($url,'?')!==false?'&':'?').join('&',$tmp);
return $url;

after:

if($tmp)$url.=(strpos($url,'?')!==false?'&':'?').join('&',$tmp);
$url = preg_replace('|&(?![w]+;)|','&', $url ); return $url;

Before:

<a href="/atk4/?page=howto&t=1">Basic Grid</a>

After:

<a href="/atk4/?page=howto&amp;t=1">Basic Grid</a>