Alphabetize array of arrays PHP

Question

I have an array of arrays formatted like the following:

$list = [ ["fdsa","1","fdsa"],["sadf","0","asdf"],["frfrf","0","sadfdsf"] ]

How can I alphabetize $list based on the first value of every inner array?

Thanks!

You will find what you need here... http://php.net/manual/en/function.array-multisort.php — Gavin, Oct 15 '13 at 21:35

score 2 · Answer 1 · edited May 23 '17 at 12:05

2

I had this function for another answer but it can be modded to do the same:

// This sorts simply by alphabetic order
function reindex( $a, $b )
{
    // Here we grab the values of the 'code' keys from within the array.
    $val1 = $a[0];
    $val2 = $b[0];

    // Compare string alphabetically
    if( $val1 > $val2 ) {
        return 1;
    } elseif( $val1 < $val2 ) {
        return -1;
    } else {
        return 0;
    }
}

// Call it like this:
usort( $array, 'reindex' );

print_r( $array );

Original: Sorting multidimensional array based on the order of plain array

edited May 23 '17 at 12:05

Community

1
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answered Oct 15 '13 at 21:37

Jason

1,967
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http://imgur.com/GXkQloT – nshah Oct 15 '13 at 21:39
Or: `function reindex($a,$b){ return strcmp($a[0],$b[0]);}` (which does the same thing). – Wrikken Oct 15 '13 at 21:56

Fleshgrinder · Accepted Answer · 2013-10-15T21:49:01.480

1

<?php

asort($list);
// OR
array_multisort($list);

?>

PHP Manual: asort() and array_multisort()

edited Oct 15 '13 at 21:49

answered Oct 15 '13 at 21:37

Fleshgrinder

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4
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score 1 · Answer 3 · answered Oct 15 '13 at 21:41

function order($a, $b){
     if ($a[0] == $b[0]) {
            return 0;
        }
        return ($a[0] < $b[0]) ? -1 : 1;
    }

$list = [ ["fdsa","1","fdsa"],["sadf","0","asdf"],["frfrf","0","sadfdsf"] ];

    usort($list, "order");


    var_dump($list); die;

score 1 · Answer 4 · answered Oct 15 '13 at 21:43

1

asort($list);

This will simply do the job for you.

Also see: http://php.net/manual/de/function.asort.php

answered Oct 15 '13 at 21:43

sebbo

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score -1 · Answer 5 · answered Oct 15 '13 at 21:35

-1

You need to sort using your own comparison function and use it along with usort().

answered Oct 15 '13 at 21:35

Jay Nebhwani

856
6
11

Alphabetize array of arrays PHP

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