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 the Unix-timestamp format but one hour earlier..I tried

$date = strtotime($date-86400)

, but seemed to me it is wrong. It returned 0 when I sneaked into the table.

What is the appropriate way to achieve this?

Thanks.

Answer 1

strtotime will give you the unix timestamp of your date. From this timestamp, you then subtract your hour:

$date = strtotime($date) - 3600; // 3600 = 60 * 60

If you call strtotime($date - 3600), it's like obtaining the time for -3600 (e.g. strtotime(-3600)) which makes no sense because strtotime expects a string as first argument.