What potential pitfalls should be considered when using array_rand() to generate a random value from an array?

One potential pitfall when using array_rand() to generate a random value from an array is that it may return the same value multiple times in a row, especially with small arrays. To ensure unique random values each time, you can shuffle the array before using array_rand().

$array = [1, 2, 3, 4, 5];
shuffle($array);
$randomValue = $array[array_rand($array)];
echo $randomValue;