Sort an array of objects by a property in a descending direction

Question

I am trying to sort an associative array which has multiple vales per entry.

For example

[0] => stdClass Object ( [type] => node [sid] => 158 [score] => 0.059600525242489 )
[1] => stdClass Object ( [type] => node [sid] => 247 [score] => 0.059600525242489 )

I want the array sorted by 'score' (highest score is first index)

How would I do this?

Answer 1

Use the usort function with this comparison function:

function cmpByScore($a, $b) {
    if ($a['score'] == $b['score']) {
        return 0;
    }
    return $a['score'] > $b['score'] ? 1 : -1;
}

usort($array, 'cmpByScore');