Get date from the three and a half months ago

Question

I know I can do

$threemonthsago = date("Y-m-d", strtotime("-3 month"));
echo "$threemonthsago";

However I want to get 3.5 months ago not three months ago. So I tried to do

$threemonthsago = date("Y-m-d", strtotime("-3.5 month"));
echo "$threemonthsago";

However it does not seem to give me the correct date its giving me like September something which it should not be since its currently April.

score 2 · Answer 1 · answered Apr 30 '14 at 16:20

2

The decimal throws off strtotime() as that is not a valid format it recognizes. The real issue you have is what exactly is half of a month? If you traverse February it gets really dicey.

This is somewhat easier to do using DateTime() and DateInterval() if you specify exactly what half of a month is:

$date = new DateTime();
$new_date = $date->sub(new DateInterval('P3M15D'));
echo $new_date->format('Y-m-d');

Demo

answered Apr 30 '14 at 16:20

John Conde

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Another non-ticker eh? *hm...* – Funk Forty Niner Apr 30 '14 at 19:09
@Fred-ii- They've chosen answers before. We'll give them the benefit of the doubt that they'll be back. – John Conde Apr 30 '14 at 19:12
They always come back ;-) Mmuuaaahh ha ha ha ha!! – Funk Forty Niner Apr 30 '14 at 19:13
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@Jayreis You thanked, but did not accept this the an answer. If it did answer your question, then marking it so will help others in future. – Mawg says reinstate Monica Apr 17 '19 at 19:09

score 1 · Accepted Answer · answered Jun 24 '22 at 21:58

1

echo(strtotime("-105 days"));

answered Jun 24 '22 at 21:58

amar essa

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Welcome to Stack Overflow! While this code may solve the question, [including an explanation](//meta.stackexchange.com/q/114762) of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please [edit] your answer to add explanations and give an indication of what limitations and assumptions apply. – Yunnosch Jun 24 '22 at 22:06

Get date from the three and a half months ago

2 Answers2