next month and previous month in php code example

Example 1: last day of previous month in php

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

print_r($lastDay);

Example 2: php date function get previous month

$tgl = '25 january 2012';

$prevmonth = date("M Y",mktime(0,0,0,date("m", strtotime($tgl))-1,1,date("Y", strtotime($tgl))));
echo $prevmonth;