Question

I’ve got a question. I’m building an array by getting data from mysql and merging three query results in one array.

I put data to array like this:

while ($a = mysql_fetch_object($activities)) {
            $a->type = 1;
            $array1[] = $a;
        }
        while ($k = mysql_fetch_object($fuups)) {
        $k->type = 2;
            $array1[] = $k;
        }
        while ($x = mysql_fetch_object($refuups)) {
            $x->type = 3;
            $array1[] = $x;
        }

        return (object)$array1;

This returns something like this:

stdClass Object
(
    [0] => stdClass Object
        (
            [added] => 2012-01-17 07:33:53
            [type] => 1
        )

    [1] => stdClass Object
        (
            [added] => 2012-01-13 06:36:22
            [type] => 1
        )

    [2] => stdClass Object
        (
            [added_type_2] => 2012-01-09 04:01:12
            [type] => 2
        )

    [3] => stdClass Object
        (
            [added_type_2] => 2012-02-08 02:08:32
            [type] => 2
        )

    [4] => stdClass Object
        (
            [added_type_2] => 2012-01-25 00:09:08
            [type] => 2
        )

    [5] => stdClass Object
        (
            [added_type_3] => 2012-01-23 00:09:08
            [type] => 3
        )

    [6] => stdClass Object
        (
            [added_type_3] => 2012-01-22 00:09:08
            [type] => 3
        )

)

I tried things like asort, ksort, sort but no luck. also getting the dates with “order by added desc” thank you

Answer 1

You can use usort() if you change fetch object to fetch assoc:

function my_date_sort($a,$b) {
   if(isset($a[0]) && isset($b[0])) {
       $a = strtotime($a[0]); // optionally convert to time
       $b = strtotime($b[0]);
       if($a == $b) return 0; 
       else return ($a > $b) ? 1 : -1;
   } else { // no valid subs, change this to put empty ones on top or bottom
       return 1; // put at bottom, -1 would put at top. 
}


usort($results, 'my_date_sort');

Good luck…