How to add missing date month year in mysql (php)

Hi 

I have tried many solutions with MySQL but at the end, i found solution with PHP

which  is best 

$begin = new DateTime('2016-01-20');

$end = new DateTime('2017-12-10');

while ($begin <= $end) {

    echo $begin->format('Y-m'), "n";

    $begin->modify('first day of next month');

}