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<?php $dates_array = ['20240228', '20240229', '20240301']; foreach ($dates_array as $date) : $datetimes[] = new DateTime($date); endforeach; $datesByMonth = []; foreach ($datetimes as $key=>$date) : $datesByMonth[$date->format('F')][] = $date->format('j'); endforeach; foreach($datesByMonth as $month => $dates) { $datesByMonth[$month] = implode(', ', $dates) . ' ' . $month; } echo implode(' & ', $datesByMonth);

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