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<?php $langCols = ['en', 'es', 'de']; array_walk($langCols, function (&$lang) { $lang = 'description_' . $lang; }); var_dump($lang, $langCols);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $lang in /in/cEPkP on line 6 NULL array(3) { [0]=> string(14) "description_en" [1]=> string(14) "description_es" [2]=> string(14) "description_de" }
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: lang in /in/cEPkP on line 6 NULL array(3) { [0]=> string(14) "description_en" [1]=> string(14) "description_es" [2]=> string(14) "description_de" }
Output for 7.3.32 - 7.3.33
NULL array(3) { [0]=> string(14) "description_en" [1]=> string(14) "description_es" [2]=> string(14) "description_de" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/cEPkP on line 2
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 '[' in /in/cEPkP on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/cEPkP on line 2
Process exited with code 255.

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