PHP - Sort Two Arrays The Same Way

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

php.net/manual/en/function.sort.php

SuperNoob
– SuperNoob

2012-03-29 01:18:25 +00:00
Commented Mar 29, 2012 at 1:18 — SuperNoob
– SuperNoob, Commented Mar 29, 2012 at 1:18

msonsona · Accepted Answer · 2012-03-29 01:31:23Z

10

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
 )

edited Mar 29, 2012 at 1:31

answered Mar 29, 2012 at 1:13

msonsona

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2 Comments

hodl Over a year ago

bfavaretto answer would be the great answer for me if he really wants the two array to be combine and match up with their correct ages.

bfavaretto Over a year ago

@MarCejas, agreed, but the answer is yours, I just added an example :)

hodl · Accepted Answer · 2012-03-29 01:14:56Z

5

Why not just use:

$arr = array('Bob'=>15,'Sue'=>12,'Phil'=>13,'Jenny'=>13);

Then you can sort smoothly.

answered Mar 29, 2012 at 1:14

hodl

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3 Comments

bfavaretto Over a year ago

Example: $c = array_combine($a, $b); asort($c);

Kishor Kundan Over a year ago

having array structured this way will also make it simple and scalable. On this structure you can reverse the array php.net/manual/en/function.rsort.php or sort the array php.net/manual/en/function.ksort.php using php functions and not worry abt how to reflect the changes to your other aray

Mouagip Over a year ago

What if you have two Jennys?

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