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<?php $langCols = ['en', 'es', 'de']; array_walk($langCols, function (&$lang) { $lang = 'description_' . $lang; }); var_dump($lang, $langCols);
based on cGvBi
Output for 5.4.0 - 7.2.0
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 4.4.2 - 4.4.9, 5.1.0 - 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 - 4.4.1, 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.