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| date("Y-m-d"); // 2015-02-10
$now = microtime(TRUE);
date("Y-m-d", $now); // 2015-02-10
date("Y-m-d", $now - 60 * 60 * 24); // 2015-02-09
mktime(hour, minute, second, month, day, year)
$t = mktime(13, 2, 3, 2, 10, 2015);
date("Y-m-d H:i:s", $t); // 2015-02-10 13:02:03
|