replace array keys with given respective keys

Question

I have an array like below

$old = array(
       \'a\' => \'blah\',
       \'b\' => \'key\',
       \'c\' => \'amazing\',
       \'d\' => array(
          


        

Answer 1

Adapting @shawn-k solution, here is more cleaner code using array_walk, it will only replace desired keys, of course you can modify as per your convenience

array_walk($old, function($value,$key)use ($keyReplaceInfoz,&$old){
        $newkey = array_key_exists($key,$keyReplaceInfoz)?$keyReplaceInfoz[$key]:false;
        if($newkey!==false){$old[$newkey] = $value;unset($old[$key]);
        }
    });

    print_r($old);