PHP restricts the images in HTML content to be from this site, _PHP Tutorial

PHP’s method of restricting images in HTML content to be from this site.

This article describes the example of PHP’s method to restrict images in HTML content to be from this site. Share it with everyone for your reference. The specific implementation method is as follows:

1. The PHP code is as follows:

<?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. Test HTML code:

<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. Running results:

[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

Reprinted from: http://www.aspnetjia.com

http://www.bkjia.com/PHPjc/1098927.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1098927.htmlTechArticlePHP’s method of restricting the images in HTML content must be from this site. This article describes the example of PHP restricting the images in HTML content to be This is the method of this site. Share it with everyone for your reference. Specific implementation method...