Question

How to convert all array keys to lowercased with array_change_key_case() function in PHP

Answer 1

$arr = array("PHP"=> 1, "C" => 2, "C#" => 3);
$arr = array_change_key_case($arr, CASE_LOWER);
print_r($arr);
 
     
/*
run:
 
Array ( [php] => 1 [c] => 2 [c#] => 3 ) 
      
*/

 

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