Home/ Questions/Q 9197479
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-17T22:04:54+00:00

I am using php for generating javascript dynamically based on different conditions. I want

  • 0

I am using php for generating javascript dynamically based on different conditions. I want browser to be able to cache it for specific amount of time.

I am using the following code for caching, but it doesn’t seem to be working.

header("Content-type: text/javascript; charset: UTF-8");
header("Cache-Control: must-revalidate");
$offset = 60 * 60 ;
$ExpStr = gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
header($ExpStr);

Also, The js file is quite big, ~290 KBs, So I want to send it compressed to the browser to reduce download time. any suggestions?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You forgot the Expires header name, So the line

    $ExpStr = gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";

    Should be

    $ExpStr = "Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";

// output your js file here

    And for compressing the output, uncomment ( or add if not exists) the following line in PHP.ini. to deflate or compress the output. Don’t forget to restart the server after modifying PHP.ini

    output_handler = ob_gzhandler
    • 0