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 $node) {&nbsp; &nbsp; foreach($node->childNodes as $childNode) {&nbsp; &nbsp; &nbsp; &nbsp; if($childNode->tagName == 'media:content') {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var_dump($childNode->getAttribute('url'));&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; }}字符串（90）”&nbsp;https://www.aljazeera.com/mritems/Images/2020/5/10/1024c76c23214805817eff50f9eb45c0_18.jpg&nbsp;“字符串（90）”&nbsp;https://www.aljazeera.com/mritems/Images/2020/ 4/24/d8cba9945a604b88a1dbb413197d0db0_18.jpg&nbsp;“字符串（90）”&nbsp;https://www.aljazeera.com/mritems/Images/2020/5/10/bb5f767a4baf4d4098cf766f71a7b347_18.jpg&nbsp;“字符串（90）”&nbsp;https://www.aljazeera. com/mritems/Images/2020/5/10/6adcf99eaeda40bea68a519d95ad9fa5_18.jpg&nbsp;“字符串（90）”&nbsp;https://www.aljazeera.com/mritems/Images/2020/3/23/4cb97ca92a4543799b3b0c83e8d6df3f_18.jpg&nbsp;“