Online PHP editor | output for 2jSIa

@ 2021-03-22T11:49:35Z

<?php

class Html {
    
  public static function load($html) {
    $document = <<<EOD
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>
<body>!html</body>
</html>
EOD;
    // PHP's \DOMDocument serialization adds extra whitespace when the markup
    // of the wrapping document contains newlines, so ensure we remove all
    // newlines before injecting the actual HTML body to be processed.
    $document = strtr($document, ["\n" => '', '!html' => $html]);

    $dom = new \DOMDocument();
    // Ignore warnings during HTML soup loading.
    @$dom->loadHTML($document);

    return $dom;
  }

  /**
   * Converts the body of a \DOMDocument back to an HTML snippet.
   *
   * The function serializes the body part of a \DOMDocument back to an (X)HTML
   * snippet. The resulting (X)HTML snippet will be properly formatted to be
   * compatible with HTML user agents.
   *
   * @param \DOMDocument $document
   *   A \DOMDocument object to serialize, only the tags below the first <body>
   *   node will be converted.
   *
   * @return string
   *   A valid (X)HTML snippet, as a string.
   */
  public static function serialize(\DOMDocument $document) {
    $body_node = $document->getElementsByTagName('body')->item(0);
    $html = '';

    if ($body_node !== NULL) {
      foreach ($body_node->childNodes as $node) {
        $html .= $document->saveXML($node);
      }
    }
    return $html;
  }
}


$source = <<<EOT
<table>
  <tr>
    <td>L</td>
    <td>R</td>
  </tr>
</table>
EOT;

$document = Html::load($source);
$out['document'] = "\n" . $document->saveHTML();

$body = $document->getElementsByTagName('body')->item(0);
$out['body'] = "\n" . $document->saveXML($body);

$table = $body->childNodes[0];
$out['table'] = "\n" . $document->saveXML($table);

$out['serialize'] = "\n" . Html::serialize($document);

var_export($out);

Output for 8.0.30, 8.1.22 - 8.1.28, 8.2.9 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: array ( 'document' => ' <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body><table> <tr> <td>L</td> <td>R</td> </tr> </table></body></html> ', 'body' => ' <body><table> <tr> <td>L</td> <td>R</td> </tr> </table></body>', 'table' => ' <table> <tr> <td>L</td> <td>R</td> </tr> </table>', 'serialize' => ' <table> <tr> <td>L</td> <td>R</td> </tr> </table>', )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array ( 'document' => ' <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body><table> <tr> <td>L</td> <td>R</td> </tr> </table></body></html> ', 'body' => ' <body><table> <tr> <td>L</td> <td>R</td> </tr> </table></body>', 'table' => ' <table> <tr> <td>L</td> <td>R</td> </tr> </table>', 'serialize' => ' <table> <tr> <td>L</td> <td>R</td> </tr> </table>', )
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.29, 8.1.0 - 8.1.21, 8.2.0 - 8.2.8: array ( 'document' => ' <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body><table><tr><td>L</td> <td>R</td> </tr></table></body></html> ', 'body' => ' <body><table><tr><td>L</td> <td>R</td> </tr></table></body>', 'table' => ' <table><tr><td>L</td> <td>R</td> </tr></table>', 'serialize' => ' <table><tr><td>L</td> <td>R</td> </tr></table>', )

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