PHP create datetime with specific day each mounth between 2 dates - php

Question

I need to create a date-time with specific day each month between a start date and a end date.
Example :
Specific day : 04
Start : 2016-12-22
End : 2017-03-06
Output needed : 2016-01-04 ; 2016-02-04 ; 2016-03-04
How can I do that?

Answer 1

You can create a DatePeriod object and iterate over it to get all the dates you need:
$start = new DateTime('2016-12-22');
$end = new DateTime('2017-03-06');
// Compute the occurrence on the same month as $start
$first = new DateTime();
$first->setDate($start->format('Y'), $start->format('m'), 4);
// If it is in the past of $start then the first occurrence is on the next month
if ($first < $start) {
$first->add(new DateInterval('P1M'));
}
// Create a DatePeriod object that iterates between $first and $end
// in increments of 1 month
$period = new DatePeriod($first, new DateInterval('P1M'), $end);
// Run through the list, process each item
foreach ($period as $day) {
echo($day->format('Y-m-d')."\n");
}

Answer 2

I found it ! This following code is working for me :
$d1 = new DateTime("2016-12-22");
$d2 = new DateTime("2017-03-06");
$dd = '04';
if ($dd < $d1->format('d') ) {
$d1->add(new \DateInterval('P1M'));
$date = $dd.'-'.$d1->format('m').'-'.$d1->format('Y');
} else {
$date = $d1->format('Y').'-'.$d1->format('m').'-'.$dd;
}
$date = new DateTime($date);
print_r($date);echo('<br />');
while ($date->add(new \DateInterval('P1M')) <= $d2){
$d1->add(new \DateInterval('P1M'));
$date = $dd.'-'.$d1->format('m').'-'.$d1->format('Y');
$date = new DateTime($date);
print_r($date);echo('<br />');
}