PHP限制HTML内容中图片必须是本站的方法，

PHP限制HTML内容中图片必须是本站的方法，_PHP教程

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发布： 2016-07-12 08:59:25

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php限制html内容中图片必须是本站的方法，

本文实例讲述了php限制html内容中图片必须是本站的方法。分享给大家供大家参考。具体实现方法如下：

1. PHP代码如下：

<?php
$dom = new DOMDocument;
$dom->loadHTML(file_get_contents('input.html'));
$xpath = new DOMXpath($dom);
$img = $xpath->query('//img');
foreach($img as $i) {
  $url = parse_url($i->getAttribute('src'));
  if(isset($url['host']) && in_array($url['host'], array('yourdomain.com', 'www.yourdomain.com')) == false) {
    // show an error
      // -- or --
      // remove the tag: $i->parent->removeChild($i)
    echo sprintf('[FAIL] %s' . PHP_EOL, $i->getAttribute('src'));
  }
  else {
    echo sprintf('[PASS] %s' . PHP_EOL, $i->getAttribute('src'));
  }
}

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2. 测试HTML代码：

<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
<p>@@##@@</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>
                    <div class="aritcle_card">
                        <a class="aritcle_card_img" href="/ai/2337">
                            <img src="https://img.php.cn/upload/ai_manual/001/246/273/175946161464083.png" alt="必应图像创建器">
                        </a>
                        <div class="aritcle_card_info">
                            <a href="/ai/2337">必应图像创建器</a>
                            <p>微软必应出品的AI绘图工具</p>
                            <div class="">
                                <img src="/static/images/card_xiazai.png" alt="必应图像创建器">
                                <span>453</span>
                            </div>
                        </div>
                        <a href="/ai/2337" class="aritcle_card_btn">
                            <span>查看详情</span>
                            <img src="/static/images/cardxiayige-3.png" alt="必应图像创建器">
                        </a>
                    </div>
                
<p>@@##@@</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>
<p>@@##@@</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>
<p>@@##@@</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>

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3. 运行结果：

[PASS] /image.jpg
[PASS] http://www.bkjia.com/uploads/allimg/160206/1559594622-0.jpg
[PASS] http://www.bkjia.com/uploads/allimg/160206/1559595506-1.jpg
[FAIL] http://otherdomain.com/image.jpg

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转载自:http://www.aspnetjia.com