yii框架中的Url生产问题小结

<?php echo chtml::link('错误链接','user/register')?>
<?php echo chtml::link('正确链接',array('user/register'))?>

'urlmanager'=>array(
'urlformat'=>'path',
'rules'=>array(
'<controller:\w+>/<id:\d+>'=>'<controller>/view',
'<controller:\w+>/<action:\w+>/<id:\d+>'=>'<controller>/<action>',
'<controller:\w+>/<action:\w+>'=>'<controller>/<action>',
),
),

/**
* 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('post/list', 'page'=>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='';
}
return $url==='' ? yii::app()->getrequest()->geturl() : $url;
}