What issue is the user experiencing with their random selection script?

The user is experiencing an issue where the random selection script is not functioning correctly and always selecting the same item. This could be due to not properly seeding the random number generator before making a selection. To solve this issue, the user should seed the random number generator using `mt_srand()` function with a unique value before calling `mt_rand()` to ensure a different random selection each time.

// Seed the random number generator with a unique value
mt_srand(microtime(true) * 100000);

// Array of items to select from
$items = ['item1', 'item2', 'item3', 'item4', 'item5'];

// Randomly select an item from the array
$randomItem = $items[mt_rand(0, count($items) - 1)];

echo $randomItem;