- print_r: documentation ( source)
<?php
$no = 0;
$start = new DateTime('2022-09-01');
$end = new DateTime('2022-09-19');
$interval = DateInterval::createFromDateString('1 day');
$period = new DatePeriod($start, $interval, $end);
foreach ($period as $dt)
{
print_r($dt->format('N')."--");
if ($dt->format('N') == 7)
{
$no++;
}
}
echo $no;