我正在尝试从 media:content 标签 RSS FEED 中检索图像 URL 并将其存储在

Question

这是 RSS 提要的一部分<item>    <title>        <![CDATA[        Japan backs coronavirus drug; Moscow keeps lockdown: Live updates        ]]>    </title>    <description>        <![CDATA[        <div><img src="https://www.aljazeera.com/mritems/Images/2020/5/9/b738bc043efb400296eff230bcfd444f_18.jpg" style="width: 100%;"><div>Over 275,000 have died worldwide while more than 1.3 million have recovered as countries weigh easing of lockdown rules.</div></div>        ]]>    </description>    <link>        https://www.aljazeera.com/news/2020/05/japan-backs-coronavirus-drug-moscow-lockdown-live-updates-200508232257831.html    </link>    <guid isPermaLink="false">592c6747e057269acbb31f383c9c110d</guid>    <dc:creator>        <![CDATA[ AJENews ]]>    </dc:creator>    <pubDate>Sat, 09 May 2020 01:18:50 GMT</pubDate>    <media:content medium="image" url="https://www.aljazeera.com/mritems/Images/2020/5/9/b738bc043efb400296eff230bcfd444f_18.jpg"/></item>这里通过 DOMDocument() 加载 rss 提要内容并定义数组以保存内容并使用 getElementsByTagName    <?php       $rss = new DOMDocument();        $rss->load('https://rss.app/feeds/7e40Pu6EiBz9ourE.xml');        $feed = array();        foreach ($rss->getElementsByTagName('item') as $node) {            $item = array (                 'title' => $node->getElementsByTagName('title')->item(0)->nodeValue,                'desc' => $node->getElementsByTagName('description')->item(0)->nodeValue,                'link' => $node->getElementsByTagName('link')->item(0)->nodeValue,                'date' => $node->getElementsByTagName('pubDate')->item(0)->nodeValue,                //'dcUri' => $rss->lookupNamespaceUri('dc'),                //'authors' => $node->getElementsByTagNameNS($item[dcUri], 'creator'),                //'cre' => $item[authors]->item(0)->nodeValue,                );            array_push($feed, $item);        } 在 mysql 数据库中存储数组内容的代码，我已成功保存（标题、des、日期）

Answer 1

这是一个如何提取图像 URL 的最小可重现示例。

• 遍历所有节点

• 为所有子节点嵌套一个循环

• 获取特定类型所需的属性

$rss = new DOMDocument();

$rss->load('https://rss.app/feeds/7e40Pu6EiBz9ourE.xml');

$feed = array();

foreach ($rss->getElementsByTagName('item') as $node) {

    foreach($node->childNodes as $childNode) {

        if($childNode->tagName == 'media:content') {

            var_dump($childNode->getAttribute('url'));

        }

    }

}

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