Solving the problem of Url production in Yii framework

<?php echo CHtml::link(&#39;错误链接&#39;,&#39;user/register&#39;)?> 
<?php echo CHtml::link(&#39;正确链接&#39;,array(&#39;user/register&#39;))?>

'urlManager'=>array( 
'urlFormat'=>'path', 
'rules'=>array( 
&#39;<controller:\w+>/<id:\d+>&#39;=>&#39;<controller>/view&#39;, 
&#39;<controller:\w+>/<action:\w+>/<id:\d+>&#39;=>&#39;<controller>/<action>&#39;, 
&#39;<controller:\w+>/<action:\w+>&#39;=>&#39;<controller>/<action>&#39;, 
), 
),

/** 
* Normalizes the input parameter to be a valid URL. 
* 
* If the input parameter is an empty string, the currently requested URL will be returned. 
* 
* If the input parameter is a non-empty string, it is treated as a valid URL and will 
* be returned without any change. 
* 
* If the input parameter is an array, it is treated as a controller route and a list of 
* GET parameters, and the {@link CController::createUrl} method will be invoked to 
* create a URL. In this case, the first array element refers to the controller route, 
* and the rest key-value pairs refer to the additional GET parameters for the URL. 
* For example, <code>array(&#39;post/list&#39;, &#39;page&#39;=>3)</code> may be used to generate the URL 
* <code>/index.php?r=post/list&page=3</code>. 
* 
* @param mixed $url the parameter to be used to generate a valid URL 
* @return string the normalized URL 
*/ 
public static function normalizeUrl($url) 
{ 
if(is_array($url)) 
{ 
if(isset($url[0])) 
{ 
if(($c=Yii::app()->getController())!==null) 
$url=$c->createUrl($url[0],array_splice($url,1)); 
else 
$url=Yii::app()->createUrl($url[0],array_splice($url,1)); 
} 
else 
$url=&#39;&#39;; 
} 
return $url===&#39;&#39; ? Yii::app()->getRequest()->getUrl() : $url; 
}