3v4l.org

run code in 300+ PHP versions simultaneously
<?php function get_month_name($m, $locale = "en_US.UTF-8") { $l = setlocale(LC_ALL, 0); setlocale(LC_ALL, "en_US.UTF-8"); $n = date("F", mktime(0, 0, 0, $m, 10)); setlocale(LC_ALL, $l); return $n; } function get_months($locale = "en_US.UTF-8") { $m = 0; $y = array(); while($m++ < 12) { $y[$m] = get_month_name($m, $locale); } return $y; } var_dump(get_months());
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(12) { [1]=> string(7) "January" [2]=> string(8) "February" [3]=> string(5) "March" [4]=> string(5) "April" [5]=> string(3) "May" [6]=> string(4) "June" [7]=> string(4) "July" [8]=> string(6) "August" [9]=> string(9) "September" [10]=> string(7) "October" [11]=> string(8) "November" [12]=> string(8) "December" }

preferences:
231.01 ms | 406 KiB | 345 Q