Sort Multi-dimensional Array by given indexes - PHP?

Question

I have two array $days_order and $mysql_result, I want to sort $mysql_result array using $days_order array. I want to display

Answer 1

Use usort with a custom compare function.

Something like:

usort($ranked, function($a, $b) {
    if ($a['day'] === $b['day']) return 0;

    return ($a['day'] > $b['day']) ? -1 : 1;
});

You can read more about this function here.