nothing beats resolving your own question hehehe
$nstime1 = explode(":", $stime1);
$netime1 = explode(":", $etime1);
$ttimehour = ($netime1[0] - $nstime1[0]);
$ttimeminutes = ($netime1[1] - $nstime1[1]);
if ($ttimeminutes <= 32) {
$ttime1 = $ttimehour + 0.5;
}
elseif ($ttimeminutes > 33) {
$ttime1 = $ttimehour + 1;
}
echo "$ttime1";
