json数据解析返回为空，哪里出有关问题了

json数据解析返回为空，哪里出问题了？
事情是这样的：

A网站提供一个连接接口，我验证登录信息通过后，返回一个json数据；但是我用$response = json_decode($output)；却得不到数据、返回是空; 请教坛子里高手，怎么才能正确解析json数据成数组呢 、
数据部分截取：

PHP code

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{"total":359,"data":[{"Id":113023,"ProductId":2905,"ProductCode":"SZX01","ProductName":"计算机图书系列","ProcessDays":1,"ProcessResume":"","WorkDayPrice":79.0000,"WeekdayPrice":89.0000,"NormalPrice":0.0000,"Catalog":"0","Type":0,"RDCatalog":0,"BizCatalog":0,"StartDate":new Date(1350691200000),"Deleted":0},{"Id":113024,"TourId":2905,"ProductCode":"SZX01","ProductName":"儿童图书教系列","ProcessDays":1,"ProcessResume":"","WorkDayPrice":79.0000,"WeekdayPrice":89.0000,"NormalPrice":0.0000,"Catalog":"0","Type":0,"RDCatalog":0,"BizCatalog":0,"StartDate":new Date(1350777600000),"Deleted":0}]｝

我的代码是这样的：

PHP code

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<?php header ("Content-Type:text/html; charset=UTF-8");  

$url = 'http://58.61.153.173/dataport/GetAllTourInfo.ashx';

$host=array('user: admin','password: admin_123');

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch,CURLOPT_HTTPHEADER,$host);

$output = curl_exec($ch);

print $output; //数据能打印出来，如上面那数据

$response = json_decode($output);//加上后边这两句，也不报错、但是也没有数据打印出来



print $response;//加上后边这两句，也不报错、但是也没有数据打印出来

?>

------解决方案--------------------
因为
"StartDate":new Date(1350691200000),
造成的,把它从字符串中都拿掉就可以了.你试试,我刚才调试过试验了.
------解决方案--------------------

PHP code

$s='{"total":359,"data":[{"Id":113023,"ProductId":2905,"ProductCode":"SZX01","ProductName":"计算机图书系列","ProcessDays":1,"ProcessResume":"","WorkDayPrice":79.0000,"WeekdayPrice":89.0000,"NormalPrice":0.0000,"Catalog":"0","Type":0,"RDCatalog":0,"BizCatalog":0,"StartDate":new Date(1350691200000),"Deleted":0},{"Id":113024,"TourId":2905,"ProductCode":"SZX01","ProductName":"儿童图书教系列","ProcessDays":1,"ProcessResume":"","WorkDayPrice":79.0000,"WeekdayPrice":89.0000,"NormalPrice":0.0000,"Catalog":"0","Type":0,"RDCatalog":0,"BizCatalog":0,"StartDate":new Date(1350777600000),"Deleted":0}]}';
$s=preg_replace('/new Date[^,]+/','"$0"',$s);
print_r(json_decode($s));
/*
stdClass Object
(
    [total] => 359
    [data] => Array
        (
            [0] => stdClass Object
                (
                    [Id] => 113023
                    [ProductId] => 2905
                    [ProductCode] => SZX01
                    [ProductName] => 计算机图书系列
                    [ProcessDays] => 1
                    [ProcessResume] => 
                    [WorkDayPrice] => 79
                    [WeekdayPrice] => 89
                    [NormalPrice] => 0
                    [Catalog] => 0
                    [Type] => 0
                    [RDCatalog] => 0
                    [BizCatalog] => 0
                    [StartDate] => new Date(1350691200000)
                    [Deleted] => 0
                )

            [1] => stdClass Object
                (
                    [Id] => 113024
                    [TourId] => 2905
                    [ProductCode] => SZX01
                    [ProductName] => 儿童图书教系列
                    [ProcessDays] => 1
                    [ProcessResume] => 
                    [WorkDayPrice] => 79
                    [WeekdayPrice] => 89
                    [NormalPrice] => 0
                    [Catalog] => 0
                    [Type] => 0
                    [RDCatalog] => 0
                    [BizCatalog] => 0
                    [StartDate] => new Date(1350777600000)
                    [Deleted] => 0
                )

        )

)
*/
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