How to exchange all keys with their associated values in PHP?

array_flip — Exchanges all keys with their associated values in an array

<?php
$trans = array("a" => 1, "b" => 1, "c" => 2);$trans = array_flip($trans);print_r($trans);?>

 

o/p:-

 

Array
(
    [1] => b
    [2] => c
)