Add hours to UTC dateTime

问题:

I am sure the answer is right in front of me, but I have a UTC dateTime that looks like this:

2014-01-02 04:02:58 

All I want to do is add some hours to that.

How can I achieve this in PHP? Further, how would I add days to it if I wanted to?

回答1:

Use DateTime(). Unlike date()/strtotime() it is timezone and daylight savings time friendly.

// PHP 5.2+ $dt = new DateTime('2014-01-02 04:02:58'); $dt->modify('+2 hours'); echo $dt->format('Y-m-d H:i:s'); $dt->modify('+2 days'); echo $dt->format('Y-m-d H:i:s'); 

See it in action

Or

// PHP 5.3+ $dt = new DateTime('2014-01-02 04:02:58'); $dt->add(new DateInterval('PT2H')); echo $dt->format('Y-m-d H:i:s'); $dt->add(new DateInterval('P2D')); echo $dt->format('Y-m-d H:i:s'); 

See it in action

Or

// PHP 5.4+ echo (new DateTime('2014-01-02 04:02:58'))->add(new DateInterval('PT2H'))->format('Y-m-d H:i:s'); 

See it in action

Reference:

• DateTime()
• DateInterval()

回答2:

You can use strtotime() try like this :

echo $new_time = date("Y-m-d H:i:s", strtotime( "2014-01-02 04:02:58".'+3 hours')); 

文章来源: Add hours to UTC dateTime