Question

我正在尝试使用REST Web服务。

以下是代码 //在自定义标题中设置标记

$options = array(
    'http'=>array(
    'method'=>"GET",
    'header'=>"authorization:$cj_token\r\n"));

$context=stream_context_create($options);
$mymerchants="https://advertiser-lookup.api.cj.com/v3/advertiser-lookup?advertiser-ids=joined";
$sxml = simplexml_load_string(file_get_contents($mymerchants,false,$context));

foreach ($sxml->advertisers->advertiser as $advertiser) {
    print_r($advertiser);
    //$a = $advertiser->advertiser-id;
    $language = $advertiser->language;      
    //echo "<BR>id=".$a;
    echo "<BR>langauge=".$language;
    echo "<BR><BR>";
}

$ sxml的值如下 SimpleXMLElement对象（[advertisers] =＆gt; SimpleXMLElement对象（[@attributes] =＆gt;数组（[total-matched] =＆gt; 496 [records-returned] =＆gt; 25 [page-number] =＆gt; 1）[ advertiser] =＆gt;数组（[0] =＆gt; SimpleXMLElement对象（[advertiser-id] =＆gt; 129899 [account-status] =＆gt;有效[七天-epc] =＆gt; 7.81 [三个月 - epc] =＆gt; 9.66 [语言] =＆gt; zh [advertiser-name] =＆gt; BOOKSAMILLION.COM [program-url] =＆gt; xhttp：//www.booksamillion.com [relationship-status] =＆gt;加入[mobile-tracking-certified] =＆gt; false [network-rank] =＆gt; 4 [primary-category] =＆gt; SimpleXMLElement对象（[parent] =＆gt; Books / Media [child] =＆gt; Books）[性能] -incentives] =＆gt; false [actions] =＆gt; SimpleXMLElement对象（[action] =＆gt; SimpleXMLElement对象（[name] =＆gt; Sale [type] =＆gt; sale [id] =＆gt; 266 [佣金] = ＆gt; SimpleXMLElement对象（[默认] =＆gt; 5.00％）））[link-types] =＆gt; SimpleXMLElement对象（[link-type] =＆gt;数组（[0] =＆gt;文字链接[1] =＆gt;横幅[2] =＆gt; DeepLink [3] =＆gt;高级链接）））[1] =＆gt; SimpleXMLElement对象（[advertiser-id] =＆gt; 79362 [account-status] =＆gt;有效[seven-day-epc] =＆gt; 19.94 [three-month-epc] =＆gt; 16.17 [语言] =＆gt; zh [advertiser-name] =＆gt; Testclear.com [program-url] =＆gt; xhttp：//www.testclear.com [relationship-status] =＆gt;加入[mobile-tracking-certified] =＆gt; false [网络-rank] =＆gt; 1 [primary-category] =＆gt; SimpleXMLElement对象（[parent] =＆gt; Health and Wellness [child] =＆gt;健康食品）[performance-incentive] =＆gt; true [actions] =＆gt; ; SimpleXMLElement对象（[action] =＆gt; SimpleXMLElement对象（[name] =＆gt; Sale [type] =＆gt; sale [id] =＆gt; 234 [委托] =＆gt; SimpleXMLElement对象（[default] =＆gt; 12.00 ％）））[link-types] =＆gt; SimpleXMLElement Object（[link-type] =＆gt; Array（[0] =＆gt; Text Link [1] =＆gt; Banner [2] =＆gt; DeepLink））） [2] =＆gt; SimpleXMLElement对象（[advertiser-id] =＆gt; 198699 [account-status] =＆gt;有效[seven-day-epc] =＆gt; 17.86 [three-month-epc] =＆gt; 10.10 [语言] =＆gt; zh [advertiser-name] =＆gt; Wickers Sportswear，Inc。[program-url] =＆gt; xhttp：//www.wickers.com [relationship-status] =＆gt;已加入[mobile-tracking-certified] =＆gt; false [network-rank] =＆gt; 1 [primary-category] =＆gt; SimpleXMLElement对象（[parent] =＆gt; Sports＆amp; Fitness [child] =＆gt;服饰）[performance-incentive] =＆gt; false [actions] =＆gt; SimpleXMLElement对象（[action] =＆gt; SimpleXMLElement对象（[name] =＆gt; Sale [type] =＆gt; sale [id] =＆gt; 435 [委托] =＆gt; SimpleXMLElement对象（[default] =＆gt; ; 7.00％）））[link-types] =＆gt; SimpleXMLElement对象（[link-type] =＆gt;数组（[0] =＆gt;文字链接[1] =＆gt;横幅[2] =＆gt; DeepLink [ 3] =＆gt;高级链接）））

当我通过这些数据循环时，我能够获得“语言”元素的值，但是如果我尝试获取“advertiser-id”字段的值，我会收到错误“（！）注意：使用undefined constant id - 假设'id'“。我的猜测是广告客户和id之间的破折号（ - ）是问题的原因，因为我已经成功地显示了语言元素的值。谢谢你的帮助。

Answer 1

由于破折号，

“advertiser-id”不是有效的标识符。 PHP将短划线解释为减号，因此$advertiser->advertiser-id被解析为$advertiser->advertiser减去名为id的常量。

请尝试使用$advertiser->{'advertiser-id'}。这是访问名称不是有效标识符的属性的一种方法。

无法导航SimpleXMLElement数据

1 个答案: