上个月的第一天日期功能不起作用？

Question

I have the below code,

$lastmonthLastDay =   date('Y-m-d', strtotime("last day of last month"));
$lastmonthFirstDay= date('Y-m-d', strtotime("first day of -1 month"));

Which works exactly in localhost. But when i push this in live always return 1970-01-01.

Is there anything i missed in server settings ? kindly advice

Answer 1

You can try this:

$firstDay = date('d-m-Y', mktime(0, 0, 0, date("m", strtotime("-1 month")), 1, date("Y",strtotime("-1 month"))));
$lastDay = date('d-m-Y', mktime(-1, 0, 0, date("m"), 1, date("Y")));

It's a more universal way to do it.