带有循环的基本松踢API XML解析

Question

我正在尝试把宋诗API解析成一个艺术家即将到来的表演日期的列表。根据我所能找到的，下面的内容应该可以做到这一点。问题是，它不起作用。

代码根本不返回任何内容。

$artist_id = "id";
$api_key = "API key";

$request_url    =    urlencode("http://api.songkick.com/api/3.0/artists/" . $artist_id . "/calendar.xml?apikey=" . $api_key);
$load_api           =    simplexml_load_file($request_url) or die("Songkick API error.");

foreach ($load_api->event as $shows) {
        $venue      =   $shows->venue["displayName"];
        $city       =   $shows->location["city"];
        $skdate =   $shows->start["date"];
                            $date = date("M d", strtotime($skdate));
        $artists    =   $shows->event->performance->artist["displayName"];

        echo $shows;
        echo $city;
        echo $date;
        echo $artists;

XML文件类似于以下几个实例：

<event type="Concert" status="ok" displayName="Band with supporting acts" popularity="0.000495" uri="songkick address for this show" id="248">
        <metroArea displayName="SF Bay Area" uri="songkick address for this metro area" id="26330">
            <state displayName="CA"/>
            <country displayName="US"/>
        </metroArea>
    </venue>
    <start time="21:30:00" datetime="2013-05-31T21:30:00-0800" date="2013-05-31"/>
    <location lat="37.7650545" lng="-122.3963593" city="San Francisco, CA, US"/>
    <performance billingIndex="1" displayName="headliner" billing="headline" id="31239239">
        <artist displayName="Band Name" uri="uri for headling band" id="4114066"/>
    </performance>
    <performance billingIndex="2" displayName="Opener 1" billing="support" id="31239244">
        <artist displayName="Opener 1" uri="Opener 1 uri to songkick band page" id="4852118"/>
    </performance>
    <performance billingIndex="3" displayName="Opener 2" billing="support" id="31239249">
        <artist displayName="Opener 2" uri="Opener 2 uri to songkick band page" id="3527036"/>
    </performance>
</event>

任何建议都会很感激.我不知所措。

谢谢!

更新:弄清楚了！谢谢!

<?php
    $artist_id  =   "*songkick artist id*";
    $api_key    =   "*api key*";
    $perm_link  =   "http://www.songkick.com/artists/$artist_id";

    $request_url    =   "http://api.songkick.com/api/3.0/artists/" . $artist_id . "/calendar.xml?apikey=" . $api_key;
    $xml            =   simplexml_load_file($request_url) or die("Songkick API error.  Click <a href=\"" . $perm_link . "\" target=\"_blank\">Click here for show dates</a>."); // load file, or if error, print direct link to songkick page

    foreach ($xml->results->event as $event) {
        $skdate     =   $event->start["date"];
            $date   =   date("M d", strtotime($skdate));
        $venue      =   $event->venue["displayName"];
        $city       =   $event->location["city"];
        $artists    =   $event->xpath("./performance/artist/@displayName");

        echo $venue, $city, $date . ":<br />" . implode(', ',$artists) . "<br />";
    }

?>

Answer 1

学习调试代码：

1. 上面的XML无效-> http://www.xmlvalidation.com
2. 确保$load_api包含您认为它通过使用var_dump($load_api);所做的事情
3. 确保PHP的错误报告处于最佳水平，搜索如何做到这一点。
4. 您的XML有多个<artist>节点，因此必须以不同的方式设置$artists。
5. 你echo $shows，这是回声-什么都没有，因为它有子，但没有价值。 $xml = simplexml_load_string( $x )；//假设**有效** XML在$x foreach ($xml->$shows事件){ $venue =$$shows->场馆“displayName”；$city =$shows>location“$x”；$date = date("M“，strtotime($shows>start”date“))；$artists =$shows>xpath(”// array /@displayName“)；//返回数组！回声"$city $date：“。内爆( '，‘，$artists)“；}

看到它的作用：http://codepad.viper-7.com/yrAjYI