‪TYPO3CMS  ‪main
OutputCompression.php
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1 <?php
2 
3 declare(strict_types=1);
4 
5 /*
6  * This file is part of the TYPO3 CMS project.
7  *
8  * It is free software; you can redistribute it and/or modify it under
9  * the terms of the GNU General Public License, either version 2
10  * of the License, or any later version.
11  *
12  * For the full copyright and license information, please read the
13  * LICENSE.txt file that was distributed with this source code.
14  *
15  * The TYPO3 project - inspiring people to share!
16  */
17 
19 
20 use Psr\Http\Message\ResponseInterface;
21 use Psr\Http\Message\ServerRequestInterface;
22 use Psr\Http\Server\MiddlewareInterface;
23 use Psr\Http\Server\RequestHandlerInterface;
25 
31 class ‪OutputCompression implements MiddlewareInterface
32 {
36  public function ‪process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface
37  {
38  // Throw away all output that may have happened during bootstrapping by weird extensions
39  ob_clean();
40  // Initialize output compression if configured
42 
43  return $handler->handle($request);
44  }
45 
49  protected function ‪initializeOutputCompression(): void
50  {
51  if (extension_loaded('zlib') && ‪$GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel']) {
52  if (‪MathUtility::canBeInterpretedAsInteger(‪$GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel'])) {
53  @ini_set('zlib.output_compression_level', (string)‪$GLOBALS['TYPO3_CONF_VARS']['BE']['compressionLevel']);
54  }
55  ob_start('ob_gzhandler');
56  }
57  }
58 }
‪TYPO3\CMS\Backend\Middleware
Definition: AdditionalResponseHeaders.php:18
‪TYPO3\CMS\Backend\Middleware\OutputCompression
Definition: OutputCompression.php:32
‪TYPO3\CMS\Core\Utility\MathUtility\canBeInterpretedAsInteger
‪static bool canBeInterpretedAsInteger(mixed $var)
Definition: MathUtility.php:69
‪TYPO3\CMS\Backend\Middleware\OutputCompression\initializeOutputCompression
‪initializeOutputCompression()
Definition: OutputCompression.php:49
‪$GLOBALS
‪$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['adminpanel']['modules']
Definition: ext_localconf.php:25
‪TYPO3\CMS\Core\Utility\MathUtility
Definition: MathUtility.php:24
‪TYPO3\CMS\Backend\Middleware\OutputCompression\process
‪process(ServerRequestInterface $request, RequestHandlerInterface $handler)
Definition: OutputCompression.php:36