dongtang5776
dongtang5776
2018-09-26 15:31

PHP使用DOMDocument和/或Regex从HTML中提取URL

已采纳

I'm trying to get the value for the key poster in the html, which is https:\/\/example.com\/avt\/test.jpg

html

    <html><body> 
    <script>
         (function(window, sabaPlayer) {
          var options = JSON.parse('{"poster":"https:\/\/example.com\/avt\/test.jpg"}')
 })
    </script>
    </body></html>

Can i do this with DOMXPath? The page has way more html but this is the specifc part i want.

$dom = new DOMDocument();

$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$result = $xpath->query("//script");

foreach($result as $node) {


}

How do i do this?

The result i want is the string https:\/\/example.com\/avt\/test.jpg

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1条回答

  • dongzhunqiu4841 dongzhunqiu4841 3年前

    I think you can use regex to fetch this value which will be easier.

    $txt = <<<TXT
    <html><body> 
      <script>
         (function(window, sabaPlayer) {
          var options = JSON.parse('{"poster":"https:\/\/example.com\/avt\/test.jpg"}')
         })
    </script>
    </body></html>
    TXT;
    
    $matches = [];
    preg_match('/JSON.parse\(\'(.*)\'\)/iu', $txt, $matches);
    
    $parsed = json_decode($matches[1]);
    

    Output will be an stdClass with property poster

    stdClass Object
    (
        [poster] => https://example.com/avt/test.jpg
    )
    

    Here is how to access the URL $parsed->poster

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