[PHP日期时间函数]③--time()/mktime()

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time()

echo time() . "
";//1503368176

echo date("Y-m-d H:i:s") . "
";//2017-08-22 02:17:35

echo date("Y-m-d H:i:s", time()) . "
";//2017-08-22 02:17:35

echo date("Y-m-d H:i:s", time() + 24 * 3600);//2017-08-23 02:18:29

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mktime()

echo mktime(0, 0, 0, 8, 12, 2016) . "
";//1470960000

$t = mktime(0, 0, 0, 6, 1, 1990);//644198400
echo $t . "
";

echo date("Y-m-d H:i:s", $t) . "
";//1990-06-01 00:00:00

echo date("Y-m-d H:i:s", mktime(0, 0, 0, 6)) . "
";//2017-06-22 00:00:00

echo date("Y-m-d H:i:s", mktime(0)) . "
";//2017-08-22 00:27:13

$birth = mktime(0, 0, 0, 6, 1, 1990);
$time = time();
echo $age = floor(($time - $birth) / (24 * 3600 * 365)) . "
";//27

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