Re: Multidimensional array help

The foreach loop is useless, as one of the conditions will be met nad your functions returns. I'm not sure, if you know you now have $foo contain $foo[0][0], $foo[1][0], $foo[1][1], $foo[1][2], $foo[2][0], and this makes it inconsistent, there is one in $foo[0] and 3 in $foo[1]. Maybe you want function cmp ($a, $b) {

      if ($a[$k]['rank'] < $b[$k]['rank']) return 1;
      if ($a[$k]['rank'] > $b[$k]['rank']) return -1;
      if ($a[$k]['rank'] == $b[$k]['rank']) return 0;

} foreach($a as $k => $null) { uasort ($foo[$k], 'cmp'); } Gerard Samuel wrote:

Hi all. Im trying to sort a multidimensional array using uasort(). I haven't used it before, so Im not too sure on its usage. Here is what I have -> -------------------- <?php echo header('Content-type: text/plain'); $foo[0][] = array('title' => 'Title 1', 'summary' => 'Summary 1', 'rank' => 13); $foo[1][] = array('title' => 'Title 2', 'summary' => 'Summary 2', 'rank' => 7); $foo[1][] = array('title' => 'Title 3', 'summary' => 'Summary 3', 'rank' => 3); $foo[2][] = array('title' => 'Title 4', 'summary' => 'Summary 4', 'rank' => 11); $foo[1][] = array('title' => 'Title 9', 'summary' => 'Summary 9', 'rank' => 4); function cmp ($a, $b) { foreach($a as $k => $null) {

       if ($a[$k]['rank'] < $b[$k]['rank']) return 1;
       if ($a[$k]['rank'] > $b[$k]['rank']) return -1;
       if ($a[$k]['rank'] == $b[$k]['rank']) return 0;

} } uasort ($foo, 'cmp'); print_r($foo); ?> ---------------------- Im trying to sort the array in descending order by the rank's value. Im not sure if Im heading in the right direction with this, but any help would be appreciated. Thanks.