Javascript json对象返回'；“未定义”；值和实际值

所以，我在这里查看了类似的问题，但仍然找不到我的问题的答案。 出于某种原因，我似乎在json对象中获得了“未定义的值和实际值。我从php文件中接收这些值。php文件的代码如下所示：

$sql = "SELECT distinct rackID FROM rackusage where startTime like '%".$curdate."%'";
$res = mysql_query($sql);
while($r = mysql_fetch_assoc($res)){


        // Queries to get respective values to put inside my array

        $temp[] = array('id' => (int) $r['rackID']); 
        $temp[] = array('rackName' => (string) $rackname);
        $temp[] = array('uptime' => (int) $uptime); 
        $temp[] = array('downtime' => (int) $downtime); 
        $temp[] = array('utilization' => (int) $utilization);
    }   echo json_encode($temp);

输出字符串如下所示：

$sql = "SELECT distinct rackID FROM rackusage where startTime like '%".$curdate."%'";
$res = mysql_query($sql);
while($r = mysql_fetch_assoc($res)){


        // Queries to get respective values to put inside my array

        $temp[] = array('id' => (int) $r['rackID']); 
        $temp[] = array('rackName' => (string) $rackname);
        $temp[] = array('uptime' => (int) $uptime); 
        $temp[] = array('downtime' => (int) $downtime); 
        $temp[] = array('utilization' => (int) $utilization);
    }   echo json_encode($temp);

[{“id”：1}，{“rackName”：“xyz”}，{“正常运行时间”：119}，{“停机时间”：0}，{“利用率”：0}，{“id”：2}，{“rackName”：“abc”}，{“正常运行时间”：122}，{“停机时间”：0}，{“利用率”：0}，{“id”：3}，{“rackName”：“pqr”}，{“正常运行时间”：114}，{“停机时间”：0}，{“利用率”：0}]

JS代码是：

        function workwithdate(curdate){
            $.ajax({
               type: "Post",
                url: 'senddata.php',
                data:{'selectDate': curdate},
                async: false,
                success: function(data){
                    if(data){
                        alert(data);
                        recData= $.parseJSON(data);
                        //recData = data;
                        console.log(recData);
                         alert(recData);
                         alert(recData.length);

                        $.each(recData, function(idx, la){
                          var someid = la.id;
                            console.log(someid);
                          var rName = la.rackName;
                            console.log(rName);
                          var rUptime = la.uptime;
                            console.log(rUptime);
                        });
       }
                }
            });
        }

我的输出如下所示：

---

TIA

您希望每行有一个关联数组，因此：

while($r = mysql_fetch_assoc($res)){
    $temp[] = array(
        'id' => (int) $r['rackID'], 
        'rackName' => (string) $rackname,
        'uptime' => (int) $uptime,
        'downtime' => (int) $downtime, 
        'utilization' => (int) $utilization
    );
}   

---

senddata.php返回的是一个由单个属性对象填充的数组，而不是一个包含一组属性的对象。