How can you sort a multidimensional array in PHP based on a specific key value?

To sort a multidimensional array in PHP based on a specific key value, you can use the `array_multisort()` function. This function allows you to sort multiple arrays or a multidimensional array based on one or more key values. By specifying the key you want to sort on, you can rearrange the elements of the array according to that key's values.

// Sample multidimensional array
$users = array(
    array("name" => "John", "age" => 30),
    array("name" => "Alice", "age" => 25),
    array("name" => "Bob", "age" => 35)
);

// Sort the array based on the 'age' key
array_multisort(array_column($users, 'age'), SORT_ASC, $users);

// Output the sorted array
print_r($users);