How to substract number of days in PHP

Question

I have to compute a specific date considering the number of days I want to substract.

My code looks roughly like this:

$datac = date("Y-m-d");
$data = strtotime("-1 day" ,$datac);

But the output is: -84384 I don't understand what I do wrong. It should work something like date -1 and show the date from yesterday. Thank you!

`$datac`needs to be a timestamp, not a formatted date.. You can find more information about `strtotime()` in the [manual](http://php.net/manual/en/function.strtotime.php) — Naruto, Jan 12 '16 at 14:30
Because the second argument to [strtotime()](http://php.net/manual/en/function.strtotime.php) should be a unix timestamp, not a formatted date string — Mark Baker, Jan 12 '16 at 14:30

score 0 · Answer 1 · answered Jan 12 '16 at 14:36

0

$datac = new DateTime();
$datac->modify('-1 day');
$data = $datac->format('Y-m-d');

answered Jan 12 '16 at 14:36

Gilberto Ramos

score 0 · Answer 2 · answered Jan 12 '16 at 14:36

0

$datac = date("Y-m-d");
$data = date("Y-m-d", strtotime('-1 day' . $datac));

answered Jan 12 '16 at 14:36

Sergynyo

2 Answers2