如何使用循环打印jSON值 - How to print jSON values with loop

How to print jSON values with loop

本文关键字：jSON 打印循环何使用 | 更新日期: 2023-09-27

我使用以下代码打印jSON响应的输出，但当我尝试打印时

echo $obj->HotelListResponse->customerSessionId;  // This is working.
echo $obj->HotelListResponse->HotelList->HotelSummary->name; // This is not working.

当响应只包含一个节点时，它会完美打印，但当有多个节点具有相同名称时，它不会打印。我试着像下面这样使用前臂。我也尝试过使用while循环，但仍然无法打印酒店名称列表。

我的jSON解码输出如下http://pastebin.com/Fr21DkEk

总代码：

$url = "https://api.eancdn.com/ean-services/rs/hotel/v3/list?cid=55505&minorRev=99&apiKey=cbrzfta369qwyrm9t5b8y8kf&locale=en_AU&currencyCode=AUD&xml=<HotelListRequest><city>Brisbane</city><stateProvinceCode>QLD</stateProvinceCode><countryCode>AU</countryCode><arrivalDate>10/16/2014</arrivalDate><departureDate>10/18/2014</departureDate><RoomGroup><Room><numberOfAdults>2</numberOfAdults></Room></RoomGroup><numberOfResults>25</numberOfResults></HotelListRequest>";
$json = file_get_contents($url);
$obj = json_decode($json);
foreach($obj as $val) {
echo $val->HotelListResponse->HotelList->HotelSummary->name;
}

试试这个

foreach($obj->HotelListResponse->HotelList->HotelSummary as $val) {
    echo $val->name . '<br/>';
}

HotelSummary是一个数组：

echo $val->HotelListResponse->HotelList->HotelSummary[0]->name;

如果你想要所有的酒店摘要：

foreach($obj as $val) {
    foreach($val->HotelListResponse->HotelList->HotelSummary as $sum) {
        echo $sum->name;
    }  
}

是的，您可以在foreach中直接访问它们。像这样：

foreach($obj->HotelListResponse->HotelList->HotelSummary as $val) {
             // ^^
    // since you're interested on just names, you can point it directly on that object, then each of that batch is in `$val`
    echo $val->name . '<br/>';
}
// or start from the parent
foreach($obj as $values) {
    $customerSessionId = $values->customerSessionId;
    echo $customerSessionId . '<hr/>';
    $hotelList = $values->HotelList;
    foreach($hotelList->HotelSummary as $hotelsummary) {
        echo $hotelsummary->name . '<br/>';
    }
}