php - One Hour Earlier Than Given Datetime

Question

I\'m having a problem here..

Supposed I have this kind of datetime.

$date = strtotime($date);

I need this to be converted into t

Answer 1

Nobody offered a DateTime object solution yet, so I will. It is the most modern method for handling datetime and doesn't require any calculation of minutes & seconds.

I always like to drop in some sort of timezone declaration to make things definitive. Daylight Saving Time is normally a concern with datetime manipulations, but probably okay in this case. Feel free to modify the timezone for your case.

PHP manual links:

• DateTime Object
• DateTime modify()
• DateTime getTimestamp()
• DateTime format()
• Timezone List

Code (including formatted time for comparison) Demo Link:

$now=new DateTime('NOW UTC');

$now_stamp=$now->getTimestamp();
$formatted_now=$now->format("Y-m-d H:i:s");
echo "$now_stamp ($formatted_now)\n";

$hour_ago=$now->modify('-1 hour');
$hour_ago_stamp=$hour_ago->getTimestamp();
$formatted_hour_ago=$hour_ago->format("Y-m-d H:i:s");
echo "$hour_ago_stamp ($formatted_hour_ago)";

Output:

1492687193 (2017-04-20 11:19:53)
1492683593 (2017-04-20 10:19:53)