time() TIMER in seconds or just numbers

[Andrew Williams <andrew4williams@xxxxxxxxx>]

what does time();

$t1 = time();

{

do something
}
$t2 = time();

$end_time = $t2 - $t1;
echo $end_time;

what does $end_time represent?

how do you determine the next 5 mins?
-- 
Best Wishes
willandy.co.uk