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<?php function ceil300($time,$const) { // function returns timestamp rounded to next 300 seconds ( 5 minutes ) + const if ($time % 300 == 0) return $time + $const; return $time + (300 - ($time % 300)) + $const; } $time = time(); $const = 210; // 210 seconds = 3:30 // getting actual time and constant $act_time = md5(ceil300($time,210)); $lst_time = md5(ceil300($time-300,210));
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0