What potential pitfalls should PHP beginners be aware of when using openssl_random_pseudo_bytes?

When using openssl_random_pseudo_bytes in PHP, beginners should be aware that the function may not always generate cryptographically secure random bytes. To ensure secure random bytes, it is recommended to use the random_bytes function instead, which was introduced in PHP 7.0. This function is specifically designed for generating cryptographically secure random bytes.

$randomBytes = random_bytes(32);