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<?php $months = range(1, 12); $months = array_map(function ($element) { return str_pad($element, 2, 0, STR_PAD_LEFT); }, $months); var_dump($months); $months = array_combine($months, $months); var_dump($months);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(12) { [0]=> string(2) "01" [1]=> string(2) "02" [2]=> string(2) "03" [3]=> string(2) "04" [4]=> string(2) "05" [5]=> string(2) "06" [6]=> string(2) "07" [7]=> string(2) "08" [8]=> string(2) "09" [9]=> string(2) "10" [10]=> string(2) "11" [11]=> string(2) "12" } array(12) { ["01"]=> string(2) "01" ["02"]=> string(2) "02" ["03"]=> string(2) "03" ["04"]=> string(2) "04" ["05"]=> string(2) "05" ["06"]=> string(2) "06" ["07"]=> string(2) "07" ["08"]=> string(2) "08" ["09"]=> string(2) "09" [10]=> string(2) "10" [11]=> string(2) "11" [12]=> string(2) "12" }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(12) { [0]=> string(2) "01" [1]=> string(2) "02" [2]=> string(2) "03" [3]=> string(2) "04" [4]=> string(2) "05" [5]=> string(2) "06" [6]=> string(2) "07" [7]=> string(2) "08" [8]=> string(2) "09" [9]=> string(2) "10" [10]=> string(2) "11" [11]=> string(2) "12" } array(12) { ["01"]=> string(2) "01" ["02"]=> string(2) "02" ["03"]=> string(2) "03" ["04"]=> string(2) "04" ["05"]=> string(2) "05" ["06"]=> string(2) "06" ["07"]=> string(2) "07" ["08"]=> string(2) "08" ["09"]=> string(2) "09" [10]=> string(2) "10" [11]=> string(2) "11" [12]=> string(2) "12" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/mrEm6 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/mrEm6 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/mrEm6 on line 4
Process exited with code 255.

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