define('MINUTE_IN_SECONDS', 60);
define('HOUR_IN_SECONDS', 60 * MINUTE_IN_SECONDS);
define('DAY_IN_SECONDS', 24 * HOUR_IN_SECONDS);
define('WEEK_IN_SECONDS', 7 * DAY_IN_SECONDS);
define('MONTH_IN_SECONDS', 30 * DAY_IN_SECONDS); // approximate value
define('YEAR_IN_SECONDS', 365 * DAY_IN_SECONDS); // approximate value
echo "1 MINUTE = " . number_format(MINUTE_IN_SECONDS, 0, ',') . " seconds \n";
echo "1 HOUR = " . number_format(HOUR_IN_SECONDS, 0, ',') . " seconds \n";
echo "1 DAY = " . number_format(DAY_IN_SECONDS, 0, ',') . " seconds \n";
echo "1 WEEK = " . number_format(WEEK_IN_SECONDS, 0, ',') . " seconds \n";
echo "1 MONTH = " . number_format(MONTH_IN_SECONDS, 0, ',') . " seconds \n";
echo "1 YEAR = " . number_format(YEAR_IN_SECONDS, 0, ',') . " seconds \n";
/*
run:
1 MINUTE = 60 seconds
1 HOUR = 3,600 seconds
1 DAY = 86,400 seconds
1 WEEK = 604,800 seconds
1 MONTH = 2,592,000 seconds
1 YEAR = 31,536,000 seconds
*/
