View file gzip.php

<?php
$PREFER_DEFLATE = false; // Если поддерживает 2 вида компрессии хватит одного или нет
$FORCE_COMPRESSION = false; // force compression even when client does not report support
function compress_output_gzip($output) { return gzencode($output); }
function compress_output_deflate($output) { return gzdeflate($output,9); }
function compress_output_x_gzip($output) { return gzcompress($output,9); }
if(isset($_SERVER['HTTP_ACCEPT_ENCODING'])) $AE=$_SERVER['HTTP_ACCEPT_ENCODING'];
else $AE=$_SERVER['HTTP_TE'];
$support_gzip=(strpos($AE,'gzip') !== FALSE) || $FORCE_COMPRESSION;
$support_deflate=(strpos($AE,'deflate') !== FALSE) || $FORCE_COMPRESSION;
$support_x_gzip=(strpos($AE,'x-gzip') !== FALSE) || $FORCE_COMPRESSION;
if($support_gzip && $support_deflate) { $support_deflate=$PREFER_DEFLATE; }
if ($support_deflate) { header("Content-Encoding: deflate"); ob_start("compress_output_deflate"); }
else {
if($support_gzip) { header("Content-Encoding: gzip"); ob_start("compress_output_gzip"); }
else {
if($support_x_gzip) { header("Content-Encoding: x_gzip"); ob_start("compress_output_x_gzip"); }
else {
ob_start();
}}}
?>