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Code to close any HTML tags that are not-closed in a string

/ Published in: PHP
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  1. function closetags ( $html )
  2.     {
  3. 		 $html = strrpos ( $html, "<" ) > strrpos ( $html, ">" ) ? rtrim ( substr ( $html, 0, strrpos ( $html, "<" ) ) )  : rtrim ( $html );
  4.  
  5. 		#put all opened tags into an array
  6. 		preg_match_all ( "#<([a-z]+)( .*)?(?!/)>#iU", $html, $result );
  7. 		$openedtags = $result[1];
  8.  
  9. 		#put all closed tags into an array
  10. 		preg_match_all ( "#</([a-z]+)>#iU", $html, $result );
  11. 		$closedtags = $result[1];
  12. 		$len_opened = count ( $openedtags );
  13. 		# all tags are closed
  14. 		if( count ( $closedtags ) == $len_opened )
  15. 		{
  16. 		return $html;
  17. 		}
  18. 		$openedtags = array_reverse ( $openedtags );
  19. 		# close tags
  20. 		for( $i = 0; $i < $len_opened; $i++ )
  21. 		{
  22. 			if ( !in_array ( $openedtags[$i], $closedtags ) )
  23. 			{
  24. 			$html .= "</" . $openedtags[$i] . ">";
  25. 			}
  26. 			else
  27. 			{
  28. 			unset ( $closedtags[array_search ( $openedtags[$i], $closedtags)] );
  29. 			}
  30. 		}
  31. 		return $html;
  32.     }
  33.  
  34. 	$snippet = "<div>This is some interesting <strong><em>content!";
  35.  
  36.      $x = closetags ( $snippet );
  37.  
  38.      print htmlspecialchars ( $x );

URL: http://snipplr.com/view/3618/close-tags-in-a-htmlsnippet/

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