本地时区的PHP日期函数，UTC的NOW现在

Question

In my code, $now = date("Ymd H:i:s") returns the time in UTC. But when using UPDATE to inject let say 'last_login' = NOW() , it returns the time according to my timezone. This posts problem when you want to compare between the two time. I want to keep things in UTC, so is there a way to UPDATE the 'last_login' field in UNIX or UTC time as well?

Answer 1

$now=gmdate("Y-m-d H:i:s");

gmdate（）与日期相同，但带有格林尼治标准时间

Answer 2

Try this

<?php 
echo date('Y-m-d H:i:s T', time()) . "\n";
date_default_timezone_set('UTC');
echo date('Y-m-d H:i:s T', time());
?>