In what scenarios would it be more efficient to handle duplicate values in a PHP array rather than in a MySQL query?

Handling duplicate values in a PHP array might be more efficient than in a MySQL query when you need to perform operations on the data that are easier to handle in PHP, such as filtering, sorting, or manipulating the array structure. In these scenarios, it can be more straightforward and faster to clean up duplicate values in the PHP array before processing the data further.

// Example code to handle duplicate values in a PHP array
$array = [1, 2, 3, 4, 2, 5, 3];
$array = array_unique($array);
print_r($array);