9.5/_compression_utility_8php_source.html

<?php

namespace ‪TYPO3\CMS\Frontend\Utility;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


class ‪CompressionUtility implements ‪\TYPO3\CMS\Core\SingletonInterface

{

    protected ‪$contentLength = 0;


    public function ‪compressionOutputHandler($outputBuffer, $mode)

    {

        // Compress the content

        $outputBuffer = ob_gzhandler($outputBuffer, $mode);

        if ($outputBuffer !== false) {

            // Save compressed size

            $this->contentLength += strlen($outputBuffer);

            // Check if this was the last content chunk

            if (0 != ($mode & PHP_OUTPUT_HANDLER_END)) {

                // Check if we have content-length header

                foreach (headers_list() as $header) {

                    if (0 == strncasecmp('Content-length:', $header, 15)) {

                        header('Content-length: ' . $this->contentLength);

                        break;

                    }

                }

            }

        }

        return $outputBuffer;

    }

}