What are some common mistakes to avoid when sorting arrays in PHP?

One common mistake to avoid when sorting arrays in PHP is not specifying the correct sorting method. It's important to understand the different sorting functions available in PHP, such as `sort()`, `rsort()`, `asort()`, `ksort()`, etc., and choose the one that best fits your sorting needs. Another mistake is not passing the array by reference when using sorting functions, which can result in unexpected behavior or errors.

// Incorrect way to sort an array without specifying the sorting method
$numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5];
sort($numbers); // Missing the sorting method

// Correct way to sort an array using the `sort()` function
$numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5];
sort($numbers);
print_r($numbers);