root@planway:/var/www/demo.planway.com/htdocs# cat shutdown_handler.php
<?php

$timer = time();

function writelog($str)
{
    $fh = fopen("/var/www/demo.planway.com/htdocs/logfile.log","a");
    fputs($fh, $str."\n");
    fclose($fh);
}

function shutdown()
{
    global $timer;

    $etime = (time() - $timer);

    print "Execution took $etime<br>";

    if ($etime > 4)
    {
        writelog(" ---- Request took $etime\n".print_r($_SERVER,true));
    }

    echo 'Script executed with success', PHP_EOL;
}

regis