What potential pitfalls should beginners be aware of when working with multiple arrays that need to be sorted together in PHP?

When working with multiple arrays that need to be sorted together in PHP, beginners should be aware of the potential pitfall of losing the original keys of the arrays when using functions like array_multisort(). To avoid this issue, beginners can use the array_combine() function to merge the keys and values of the arrays before sorting them together.

// Example arrays to be sorted together
$array1 = [3, 1, 2];
$array2 = ['c', 'a', 'b'];

// Combine keys and values of arrays
$combinedArray = array_combine($array1, $array2);

// Sort the combined array by keys
ksort($combinedArray);

// Separate the sorted keys and values back into separate arrays
$sortedArray1 = array_keys($combinedArray);
$sortedArray2 = array_values($combinedArray);

// Output the sorted arrays
print_r($sortedArray1);
print_r($sortedArray2);