<?php

    function no_cache() {
        if(headers_sent()) return FALSE;

        header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT", TRUE);
        header("Content-Type: text/html; charset=ISO-8859-1", TRUE);
        header("Cache-Control: no-store, private, no-cache, must-revalidate", TRUE);
        header("Cache-Control: proxy-revalidate, post-check=0, pre-check=0", FALSE);
        header("Cache-Control: max-age=0, s-maxage=0", FALSE);
        header("Pragma: no-cache", TRUE);

    return TRUE;
    }

?>