How to get last day of Month using PHP?

To get last day of month in php we will use 

date("Y-m-t", strtotime($a_date)) method

 

Let's write example

?php
$a_date = "2019-01-23";
echo date("Y-m-t", strtotime($a_date));
?>

 

This will return last day of given date

2019-01-31

 

 

How to get Last day of previous month?

To get last date of previous month we will use below code

 

?php
$lastDay = date('t',strtotime('last month'));

print_r($lastDay);
?>