本文實例講述了PHP限制HTML內容中圖片必須是本站的方法。分享給大家供大家參考。具體實現方法如下:
1. PHP代碼如下:
<?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')); } }
2. 測試HTML代碼:
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p> <p><img src="/image.jpg"></p> <p><img src="http://www.bkjia.com/uploads/allimg/160206/1559594622-0.jpg"></p> <p><img src="http://www.bkjia.com/uploads/allimg/160206/1559595506-1.jpg"></p> <p><img src="http://otherdomain.com/image.jpg"></p>
3. 運行結果:
[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
轉載自:http://www.aspnetjia.com