[PHP日期时间函数]④--strtotime()

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echo time() . "
";//1503371399

echo strtotime('now') . "
";//1503371399

echo date("Y-m-d H:i:s", time() + 24 * 3600) . "
";//2017-08-23 03:09:59

echo date("Y-m-d H:i:s", strtotime('+1 days')) . "
";//2017-08-23 03:09:59

echo date("Y-m-d H:i:s", strtotime('+2 years 3 month 12 days')) . "
";//2019-12-04 03:11:28

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