PHP Regular表示删除<h1>标签(及其内容)

Question

干草,我似乎无法在网上找到任何正则表达式删除

<h1></h1>

标签(及其内容).

任何人都可以帮助你.

Answer 1

不要使用正则表达式,使用像PHP Simple HTML DOM这样的工具.

// Construct dom from string
$dom = str_get_html($html);

// ...or construct dom from file/url
$dom = file_get_html($path);

// strip h1 tags (and their content)
foreach ($dom->find('h1') as $node) {
    $node->outertext = '';
}

Answer 2

preg_replace('@<h1[^>]*?>.*?<\/h1>@si', '', $htmlsource);

Answer 3

您还可以使用PHP的DOM扩展模块：

$domDocument = new DOMDocument;
$domDocument->loadHTMLFile('http://example.com');
$domNodeList = $domDocument->getElementsByTagname('h1');
$domElemsToRemove = array();
foreach ($domNodeList as $domElement) {
    $domElemsToRemove[] = $domElement;
}
foreach($domElemsToRemove as $domElement) {
    $domElement->parentNode->removeChild($domElement);
}
var_dump($domDocument->saveHTML());