Question

//Difference between 2 dates
This function works well but display wrong time format. Pls how can I change the time of this function from GMT to GMT+1? Displays 15hrs 22mins instead of 16hrs 22mins.
Thanks

function get_date_diff($start, $end="NOW")
{
        $sdate = strtotime($start);
        $edate = strtotime($end);
        $timeshift = "";

        $time = $edate - $sdate;
        if($time>=0 && $time<=59) {
                // Seconds
                $timeshift = $time.' seconds ';

        } elseif($time>=60 && $time<=3599) {
                // Minutes + Seconds
                $pmin = ($edate - $sdate) / 60;
                $premin = explode('.', $pmin);

                $presec = $pmin-$premin[0];
                $sec = $presec*60;

                $timeshift = $premin[0].' min '.round($sec,0).' sec '."<b>ago</b>";

        } elseif($time>=3600 && $time<=86399) {
                // Hours + Minutes
                $phour = ($edate - $sdate) / 3600;
                $prehour = explode('.',$phour);

                $premin = $phour-$prehour[0];
                $min = explode('.',$premin*60);

                $presec = '0.'.$min[1];
                $sec = $presec*60;

                $timeshift = $prehour[0].' hrs '.$min[0].' min '.round($sec,0).' sec '."<b>ago</b>";

        } elseif($time>=86400) {
                // Days + Hours + Minutes
                $pday = ($edate - $sdate) / 86400;
                $preday = explode('.',$pday);

                $phour = $pday-$preday[0];
                $prehour = explode('.',$phour*24); 

                $premin = ($phour*24)-$prehour[0];
                $min = explode('.',$premin*60);

                $presec = '0.'.$min[1];
                $sec = $presec*60;

                $timeshift = $preday[0].' days '.$prehour[0].' hrs '.$min[0].' min '.round($sec,0).' sec '."<b>ago</b>";


        }
        return $timeshift;
}

Answer 1

Set the timezone using the date_default_timezone_set() function. If that doesn’t work, you have PHP <5.1.0 and should set the TZ environment variable. Check here for the detailed order of preference used to determine the timezone.

You could also skip all that code you wrote and use the date() function to get the resulting datetime string in pretty much any format you desire.