Version difference for strtotime('first day of last month')?

Question

In a script that contains

date(\'Y-m-d\', strtotime(\'first day of last month\'))

in version 5.3.10 (localhost) I get, for example, \'2012

Answer 1

date('Y-m-d', strtotime('first day of -1 month'))

Works fine on PHP 7.0

Answer 2

As simple as:

date('Y-m-01')

The first day of any month always is 1.

Answer 3

That's a known bug from PHP 5.2.17

Answer 4

You should use the mktime() function:

<?php 
echo date('Y-m-d', mktime(0,0,0,date('n')-1,1,date('Y'))); //2012-03-01
?>

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