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array_change_key_case() function in PHP

The array_change_key_case() function used for changes all keys of array to lowercase or uppercase.

Syntax

array_change_key_case(array,case);

case

Either CASE_UPPER or CASE_LOWER (default)

Example

$age=array("Ram"=>"30","Shyam"=>"32","Ghanshyam"=>"35");
print_r(array_change_key_case($age,CASE_LOWER));

Output

Array ( [ram] => 30 [shyam] => 32 [ghanshyam] => 35 )

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