What are some potential pitfalls to be aware of when shuffling array elements in PHP?

One potential pitfall when shuffling array elements in PHP is accidentally modifying the original array instead of creating a shuffled copy. To avoid this, make sure to use the `shuffle()` function on a copy of the original array rather than the original array itself.

// Create a copy of the original array before shuffling to avoid modifying the original array
$originalArray = [1, 2, 3, 4, 5];
$shuffledArray = $originalArray;
shuffle($shuffledArray);

// Output the shuffled array
print_r($shuffledArray);