Create an assoc array with equal keys and values from a regular array

Question

I have an array that looks like

$numbers = array(\'first\', \'second\', \'third\');

I want to have a function that will take this array as

Answer 1

You can use the array_combine function, like so:

$numbers = array('first', 'second', 'third');
$result = array_combine($numbers, $numbers);