include/libs/template_lite/plugins/outputfilter.gzip.php

   1 <?php
   2 /*
   3  * Author: Mark Dickenson, akapanamajack@wildmail.com
   4  * You can stack multiple template display commands to have the entire page output as a compressed file.
   5  *
   6  * This output filter was specifically written to work with Alien Assault Traders but can be used on other projects.
   7  *
   8  * $send_now = 0 will cache the output and not send the data until $send_now = 1
   9  * $_tpl_saved is a reserved variable for storing the cached output
  10  * $force_compression = 1 will cause all output to be compressed and ignore what the browser or server indicates to gzip support
  11  * $compression_level is the amount of compression to use on the output 0 is the leasat and 9 is maximum
  12  * $template_object->enable_gzip = 0 output is not compressed $template_object->enable_gzip = 1 output is compressed
  13  */
  14
  15 function template_outputfilter_gzip($tpl_source, &$template_object)
  16 {
  17         static $_tpl_saved = '';
  18
  19         $gzipped = 0;
  20         if($template_object->enable_gzip)
  21         {
  22                 if(extension_loaded("zlib") && !get_cfg_var('zlib.output_compression') && !$template_object->cache && (strstr($_SERVER["HTTP_ACCEPT_ENCODING"],"gzip") || $template_object->force_compression))
  23                 {
  24                         $_tpl_saved .= $tpl_source . "\n<!-- zlib compression level " . $template_object->compression_level . " -->\n\n";
  25                         $tpl_source = "";
  26
  27                         if($template_object->send_now == 1)
  28                         {
  29                                 $gzipped = 1;
  30                                 $tpl_source = gzencode($_tpl_saved, $template_object->compression_level);
  31                                 $_tpl_saved = "";
  32                         }
  33                 }
  34         }
  35         else
  36         {
  37                 if(!$template_object->caching && !get_cfg_var('zlib.output_compression'))
  38                 {
  39                         $_tpl_saved .= $tpl_source."\n<!-- normal saved output -->\n\n";
  40                         $tpl_source = "";
  41
  42                         if($template_object->send_now == 1)
  43                         {
  44                                 $tpl_source = $_tpl_saved;
  45                                 $_tpl_saved = "";
  46                         }
  47                 }
  48         }
  49
  50         if($template_object->send_now == 1 && $template_object->enable_gzip == 1)
  51         {
  52                 if($gzipped == 1)
  53                 {
  54                         header("Content-Encoding: gzip");
  55                         header("Content-Length: " . strlen($tpl_source));
  56                 }
  57         }
  58
  59         return $tpl_source;
  60 }
  61 ?>