json样式转化

   public function bbb(){        header("content-type:application/json,charset=utf-8");//*        $url="http://zphteach.com/zph/8wei/json/json.php";        $file=file_get_contents($url);        $b=json_decode($file,true);        //print_r($b);die;        $b[0]['name']="zhangsan's";        $b[1]['name']="lisi<zhangsan";        header("content-type:application/xml");//*        //print_r($b);die;        echo '<?xml version="1.0" encoding="utf-8" ?>';        echo "<note>";        foreach($b as $key => $val){            echo "<rows>";                foreach($val as $k => $v){                    echo "<a>";                    echo $v;                    echo "</a>";                }            echo "</rows>";        }        echo '</note>';    }