What is the difference between using array_multisort() and ksort() to sort the POST array in PHP?

When sorting the POST array in PHP, using array_multisort() is more versatile as it can sort multiple arrays simultaneously based on different criteria. On the other hand, ksort() specifically sorts an array by its keys only. If you need to sort the POST array by its values, array_multisort() is the better choice.

// Using array_multisort() to sort POST array by values
$values = array_values($_POST);
array_multisort($values, $_POST);

// Now $_POST array is sorted by values