In PHP, what are some common pitfalls to avoid when reversing values within an array?

One common pitfall when reversing values within an array in PHP is not properly preserving the keys of the array. To avoid this issue, you can use the `array_reverse()` function with the second parameter set to `true` to maintain the original keys of the array.

// Incorrect way to reverse values in an array without preserving keys
$array = [1, 2, 3, 4];
$array = array_reverse($array);

// Correct way to reverse values in an array while preserving keys
$array = [1, 2, 3, 4];
$array = array_reverse($array, true);