php 日期可能的错误

Question

I found a possible bug in PHP date function, if you run this code:

date('Y-m-d', strtotime('first monday 2020-06'));

the output is 2020-06-08 instead of 2020-06-01, is this a bug or i'm doing something wrong?

Answer 1

You need to put an "of" between first monday and the date date('Ym-d', strtotime('first monday of 2020-06 ')); You can read about it at relative Formats

Answer 2

You can write first monday of june 2020 in strtotime() like below:

echo date('Y-m-d', strtotime("first monday of june 2020"));