How can I ensure that the random number generated in PHP is truly random?

Generating truly random numbers in PHP can be achieved by using the `random_int()` function, which generates cryptographically secure pseudo-random integers. This function provides a more secure and reliable way to generate random numbers compared to `rand()` or `mt_rand()`, which are not suitable for cryptographic purposes.

$randomNumber = random_int(1, 100);
echo $randomNumber;