<?php
/**
*    Simple    function    to    replicate    PHP    5    behaviour
*/
function    microtime_float()
{
        list($usec,    $sec)    =    explode("    ",    microtime());
        return    ((float)$usec    +    (float)$sec);
}
$time_start    =    microtime_float();
//    Sleep    for    a    while
usleep(100);
$time_end    =    microtime_float();
$time    =    $time_end    -    $time_start;
echo    "Did    nothing    in    $time    seconds/n";
?>