how to use array_change_key_case() function in an array in php language.
php array function.
Here is solution.I am explain array_change_key_case() use for php function.
array_change_key_case() :-
Definition & Usage :- The array_change_key_case() function returns array with all string keys converted into lowercase or uppercase. example:-<?php $marks = array("math"=>"35", "hindi"=>"25"); print_r(array_change_key_case($age, CASE_UPPER)); ?> output// array([MATH]=>35 [HINDI]=>25)