What potential pitfalls can arise when trying to pass a string instead of an array as an argument to array_multisort in PHP?

When trying to pass a string instead of an array as an argument to array_multisort in PHP, a potential pitfall is that the function expects arrays as arguments and may throw an error or produce unexpected results. To solve this issue, make sure to pass arrays as arguments to array_multisort.

// Incorrect way: passing a string instead of an array
$names = "John, Mary, Alice";
array_multisort($names);

// Correct way: passing arrays as arguments
$names = ["John", "Mary", "Alice"];
array_multisort($names);