Sort user defined multi-dimensional array

Question

I have a user defined multidimensional array that I am trying to sort. I looked around, and say only how to sort single dimensional arrays, or associative arrays with keys... So, if I have the following...

$treasure = array( array("Banana", "Yellow"), 
    array("Apple", "red"), 
    array("Pear", "green"), 
    array("Peach", "orange"), 
    array("Orange", "orange"), 
    array("Kiwi", "green"));

How do I sort the array so the first element of the interior array is alphabetical? So I would end up with...

$treasure = array( array("Apple", "red"),
    array("Banana", "Yellow"), 
    array("Kiwi", "green")
    array("Orange", "orange"),
    array("Peach", "orange"),  
    array("Pear", "green"), 
    );

array_multisort($treasure); print_r($treasure); ? This was asked many times! — Rizier123
– Rizier123, Commented Jan 18, 2015 at 22:35
array_multisort didnt work. I checked many pages before posting this question. — Jabbamonkey
– Jabbamonkey, Commented Jan 18, 2015 at 23:34

Johann Bauer · Accepted Answer · 2015-01-18 22:37:04Z

1

You could use usort:

<?php
function cmp($a, $b)
{
    return strcmp(reset($a), reset($b));
}

usort($treasure , "cmp");

answered Jan 18, 2015 at 22:37

Johann Bauer

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Marcin Orlowski · Accepted Answer · 2015-01-18 22:35:41Z

0

Use usort() and provide own comparator.

answered Jan 18, 2015 at 22:35

Marcin Orlowski

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