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Caching Output in PHP

, 23 Dec 2009
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Introduction...

Introduction

 
High-traffic sites can often benefit from caching of pages, to save processing of the same data over and over again.
 

Using the Code

 
Put the first function cache_start in the beginning of php script and the second cache_end in the end of script.
 
$_time : cache time
$dir : directory to cache files
 
function cache_start($_time, $dir)
{
  $cachefile = $dir.'/'.sha1($_SERVER['REQUEST_URI']).'.html';
  $cachetime = $_time;
  ob_start();
 
  if(file_exists($cachefile) && (time( )-$cachetime < filemtime($cachefile)))
  {
    include($cachefile);
    ob_end_flush();
    exit;
  }
}
 
function cache_end($dir)
{
  $cachefile = $dir.'/'.sha1($_SERVER['REQUEST_URI']).'.html';
  $fp = fopen($cachefile, 'w');
  fwrite($fp, ob_get_contents());
  fclose($fp);
  ob_end_flush();
}

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

koula7
Software Developer
Greece Greece
No Biography provided

Comments and Discussions

 
GeneralUm PinmemberRockyonfire16-Aug-10 11:24 
GeneralRe: Um PinmemberS.M. Zamshed Farhan11-Jan-13 5:52 
GeneralMy vote of 1 Pinmemberdung_90ghost5-Apr-10 0:47 
thanks
GeneralGood Tip PinmemberJon Anthony17-Dec-09 2:38 

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