Sort Array by Third Value - Date

[TripleDES]

Let's say I have 3 elements in my array:

[0] = apple

[1] = orange

[2] = 06/12/2007

 

 

How do I go about sorting by date using the 3rd element?

[Barand]

First step is to choose a date format that can be sorted.

[TripleDES]

Yes, no problem there.  I'll convert the entered date into epoch.  But how do I sort by the third value in the array?

[Barand]

Custom sort function and usort()

 

<?php

function mysort($a, $b)
{
    if ($a[2] == $b[2]) return 0;
    return ($a[2] < $b[2])  ?  -1 : 1;
}

$ar = array (
           array ('apple', 'orange', '2007-06-13'),
           array ('kiwi', 'pear', '2007-04-10'),
           array ('banana', 'nectarine', '2007-05-10')
        );

usort ($ar, 'mysort');

// check results

echo '<pre>', print_r($ar, true), '</pre>';
?>

[TripleDES]

Thank you!  Please explain the function you created so I can understand.

[Barand]

http://www.php.net/manual/en/function.usort.php