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

array_combine(
    ['newKey1', 'newKey2', 'newKey3'],
    array_values(['oldKey1' => 1, 'oldKey2' => 2, 'oldKey3' => 3])
);

This should do the trick as long as you have the same number of values and the same order.