Answers for "date day month format in php"

php days in month

// For given month
echo cal_days_in_month(CAL_GREGORIAN, 1, 2021);
// For current month
echo date('t');

php date from format

<?php
$date = DateTime::createFromFormat('j-M-Y', '15-Feb-2009');
echo $date->format('Y-m-d');
?>

get month days in php

echo cal_days_in_month(CAL_GREGORIAN, 8, 2009);