What are some common mistakes or issues to watch out for when sorting arrays in PHP?

One common mistake when sorting arrays in PHP is forgetting to specify the sorting type parameter when using functions like `sort()` or `asort()`. This can lead to unexpected results or errors. To avoid this issue, always specify the sorting type parameter (e.g., `SORT_REGULAR`, `SORT_NUMERIC`, `SORT_STRING`) to ensure the array is sorted correctly.

// Incorrect way (missing sorting type parameter)
$array = [3, 1, 2];
sort($array); // Incorrect sorting

// Correct way (specifying sorting type parameter)
$array = [3, 1, 2];
sort($array, SORT_NUMERIC); // Correct sorting