Multidim. Array sorting problem

[IWeb]

Hello,

I have an array that looks like this one:

$data[0]['a'] = "Text";
$data[0]['b'] = "Text";
$data[0]['c'] = 12.23;
$data[1]['a'] = "Text";
$data[1]['b'] = "Text";
$data[1]['c'] = 99.23;
$data[2]['a'] = "Text";
$data[2]['b'] = "Text";
$data[2]['c'] = 0.23;
...

I want to sort this multi dimensional array by [][c].
Therefor I tried the following, but it does not work properly:

usort($data, "scmp");

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

It would also be great if after sorting the array above would look like this one:

$data[0]['a'] = "Text";
$data[0]['b'] = "Text";
$data[0]['c'] = 0.23;
$data[1]['a'] = "Text";
$data[1]['b'] = "Text";
$data[1]['c'] = 12.23;
$data[2]['a'] = "Text";
$data[2]['b'] = "Text";
$data[2]['c'] = 99.23;
...

Can somebody tell me how to do this task?

thanks,

[sidney]

if i uderstand you , array_multisort should do the trick

 foreach ($data as $key => $row) {
   $c1[$key] = $row['c'];

}
array_multisort($c1, SORT_ASC, $data); 

[IWeb]

Thanks. That was exactly what I needed 😃