JSON转数组 获取有关问题

<br /><?php<br /><br /><br />$cityArry = '[<br />        {<br />            "省": "台湾",<br />            "市": [<br />                {<br />                    "市名": "台北县",<br />                    "编码": "101340101"<br />                },<br />                {<br />                    "市名": "台中",<br />                    "编码": "101340401"<br />                }<br />            ]<br />        }<br />    ]';  <br /><br /><br />$temp1 = json_decode($cityArry);  <br /><br />$arr = array ($temp1);<br /><br />print_r($arr[0]);<br /><br />?><br />