php去掉js标签

<?php
function remove_js_tags($html) {
    // 使用正则表达式匹配<script>标签及其内容
    $clean_html = preg_replace('/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi', '', $html);
    return $clean_html;
}

// 示例用法
$html_content = '<div>Hello <script>alert("JS Tag");</script> World!</div>';
$cleaned_content = remove_js_tags($html_content);
echo $cleaned_content; // 输出: <div>Hello  World!</div>
?>

<?php
function remove_js_tags_using_strip_tags($html) {
    // 只允许特定的HTML标签，排除<script>标签
    $clean_html = strip_tags($html, '<div><p><a>'); // 根据需要添加其他允许的标签
    return $clean_html;
}

// 示例用法
$html_content = '<div>Hello <script>alert("JS Tag");</script> World!</div>';
$cleaned_content = remove_js_tags_using_strip_tags($html_content);
echo $cleaned_content; // 输出: <div>Hello  World!</div>
?>

<?php
function remove_js_tags_using_dom($html) {
    libxml_use_internal_errors(true); // 防止HTML解析错误
    $dom = new DOMDocument();
    $dom->loadHTML(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
    
    // 获取所有<script>元素
    $scripts = $dom->getElementsByTagName('script');
    while ($scripts->length > 0) {
        $script = $scripts->item(0);
        $script->parentNode->removeChild($script);
    }
    
    // 返回清理后的HTML
    return $dom->saveHTML();
}

// 示例用法
$html_content = '<div>Hello <script>alert("JS Tag");</script> World!</div>';
$cleaned_content = remove_js_tags_using_dom($html_content);
echo $cleaned_content; // 输出: <div>Hello  World!</div>
?>