Question

I have two different arrays. One array, a, for a list of people. My other array, b, for a list of their ages. I go to sort b by number and then reverse it so it goes in descending order. I got to this part okay.

How do I sort a (a list of people’s names) so that the same values are still paired up with the sorted list?

Example:

a contains Bob, Sue, Phil, and Jenny respectively

b contains 15, 12, 13, and 13 respectively.

I want my outcome to be:

a contains Bob, Jenny, Phil, and Sue respectively

b contains 15, 13, 13, and 12 respectively

Answer 1

http://php.net/manual/en/function.array-multisort.php

using example #1 in the reference:

$a = array('Bob', 'Sue', 'Phil', 'Jenny');
$b = array(15, 12, 13, 13);
array_multisort($a, $b);
print_r($a);
> Array
 (
 [0] => Bob
 [1] => Jenny
 [2] => Phil
 [3] => Sue
 )
print_r($b);
> Array
 (
 [0] => 15
 [1] => 13
 [2] => 13
 [3] => 12
 )