php解析一个url

$url = "http://shopnc.localhost/shop/index.php?act=goods&op=index&goods_id=25220";
$s = parse_url($url);
var_dump($s);

$t = parse_str($s['query'],$arr);
var_dump($arr);

array
'scheme' => string 'http' (length=4)
'host' => string 'shopnc.localhost' (length=16)
'path' => string '/shop/index.php' (length=15)
'query' => string 'act=goods&op=index&goods_id=25220' (length=33)
array
'act' => string 'goods' (length=5)
'op' => string 'index' (length=5)
'goods_id' => string '25220' (length=5)

$url ="http://ci.localhost/index.php/home/adminlogin";
//$url = "http://shopnc.localhost/shop/index.php?act=goods&op=index&goods_id=25220";
$s = parse_url($url);
var_dump($s);

$t = parse_str($s['query'],$arr);
var_dump($arr);

$url ="http://ci.localhost/index.php/home/adminlogin";
//$url = "http://shopnc.localhost/shop/index.php?act=goods&op=index&goods_id=25220";
$s = parse_url($url);
var_dump($s);

$t = parse_str($s['query'],$arr);
var_dump($arr);

var_dump(pathinfo($url)); //不行

var_dump(basename($url));

var_dump(dirname($url));
//这种模式类型都不行，所以换个思路

$mm = $s['path'];
$g = explode("/",$mm);
var_dump($g);
//unset($g['0']);
//var_dump($g);
list($b,$n,$acttion,$function) = $g;
echo '<br>';
echo $n;
echo '<br>';
echo $acttion;
echo '<br>';
echo $function;