PHP DOMDocument 提取元素并创建新文档
HTML：
<head>
<link rel="preload" href="/_next/list.js" as="script">
<!-- ... other link elemens -->
<style data-styled="" data-styled-version="4.2.0"></style>
</head>
任务：
从 head 中提取所有链接和样式标签，并使用主机路径更新 href 属性。
创建新的 html 字符串元素（一段 html），我们可以在我们的主 html 模板中输出它。
PHP：
$dom = new DOMDocument();
$dom->loadHTML($stringBody);
$xpath = new DOMXPath($dom);
$headItems = $xpath->query("//head/link[@rel='preload' or @rel='stylesheet'] | //head/style");
// now I want to create html string with updated attributes, but I'm lost here..
$head = new DOMDocument();
foreach ($headItems as $headNode) {
$headNode->setAttribute('href', $host . $headNode->getAttribute('href'));
}
$links = $head->saveHTML($headNode);
echo $links; // echo html link tags
沧海一幻觉浏览 215回答 1
1回答
-
拉丁的传说
试试这个：<?php$host = 'example.com';$stringBody = '<head> <link rel="preload" href="/_next/list.js" as="script"> <!-- ... other link elemens --> <style data-styled="" data-styled-version="4.2.0"></style></head>';$dom = new DOMDocument();$dom->loadHTML($stringBody);$xpath = new DOMXPath($dom);$headItems = $xpath->query("//head/link[@rel='preload' or @rel='stylesheet'] | //head/style");$links = [];foreach ($headItems as $headNode) { if ($headNode->hasAttribute('href')) { $headNode->setAttribute('href', $host . $headNode->getAttribute('href')); } $links[] = $headNode->ownerDocument->saveHTML($headNode);}print_r($links);输出Array( [0] => <link rel="preload" href="example.com/_next/list.js" as="script"> [1] => <style data-styled="" data-styled-version="4.2.0"></style>)
随时随地看视频慕课网APP
PHP