What are some potential pitfalls to be aware of when generating random strings in PHP?

One potential pitfall when generating random strings in PHP is using insecure random number generators, which can lead to predictable or easily guessable strings. To mitigate this risk, it's important to use a secure random number generator like `random_bytes()` or `openssl_random_pseudo_bytes()`.

// Using random_bytes() to generate a secure random string
$randomString = bin2hex(random_bytes(16));
echo $randomString;