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  1. <?php
  2.  
  3. function example($attr) {
  4.     return preg_match('/post-(content|[a-z]+)/i', $attr) > 0;
  5. }
  6. $html = <<<HTML
  7. <body>
  8. <div class='post-body entry-content' id='post-body-37'>
  9. <div style="text-align: left;">
  10. <div style="text-align: center;">
  11. Hi
  12. </div></div></div>
  13. </body>
  14. HTML;
  15. $dom = new DOMDocument;
  16. $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED|LIBXML_HTML_NODEFDTD);
  17.  
  18. $xp = new DOMXPath($dom);
  19. $xp->registerNamespace("php", "h"."ttp://php.net/xpath");
  20. $xp->registerPHPFunctions('example');
  21. $divs = $xp->query("//div[php:functionString('example', @class)]");
  22. foreach ($divs as $div) {
  23. 	echo $div->nodeValue;    
  24. }
Success #stdin #stdout 0.02s 25020KB
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Hi
https://ideone.com/DDiMTB
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
secret

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