3v4l.org

run code in 300+ PHP versions simultaneously
<?php $begin = 11; $finish = 3; $period = new DatePeriod( DateTime::createFromFormat('m', $begin), new DateInterval('P1M'), DateTime::createFromFormat('m', $finish + ($begin > $finish ? 13 : 1)) // add 13 or 1 for inclusive range ); foreach ($period as $obj) { $array[] = $obj->format('n'); } var_export($array);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 0 => '11', 1 => '12', 2 => '1', 3 => '2', 4 => '3', )

preferences:
101.86 ms | 1503 KiB | 4 Q