Array Sorting PHP by timestamp

Question

I have problem ordering an array in the way I want.

This is an example output of my array:

# 159 rows in total
Array
(
    [0] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025723
            [3] => /fcTGqQGD
        )
 
    [1] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025723
            [3] => /YQNk8yqa
        )
 
    [2] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025723
            [3] => /u2BNPrad
        )
 
    [3] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025722
            [3] => /d/blogdialain.com
        )
 
    [4] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025722
            [3] => /d/shopcraze.com
        )
 
    [5] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025722
            [3] => /domains_archive/175
        )
 
    [6] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025722
            [3] => /d/togou.com
        )
 
    [7] => Array
        (
            [0] => pastebin
            [1] =>  
            [2] => 1305025722
            [3] => /W6NafmJa
        )
)

Complete array data here: http://pastebin.com/GJNBmqL7

Data comes from various database at once, so I'm limited in the way that I put the data into the array.

The [2] always contains a linux timestamp. Now I want the entire array to be ordered by that timestamp, with the lowest value first.

How can I get that done?

Answer 1

here an array_multisort example:

foreach ($array as $key => $node) {
   $timestamps[$key]    = $node[2];
}
array_multisort($timestamps, SORT_ASC, $array);

Answer 2

You can do this simply by using a custom sort. So assuming your datestamp is always index 2:

function sortArray($a1, $a2){
    if ($a1[2] == $a2[2]) return 0;
    return ($a1[2] > $a2[2]) ? -1 : 1;
}

usort($array, "sortArray");