Are there any best practices for handling activation links in PHP to avoid user confusion or irritation?

When sending activation links in PHP, it's important to ensure that the links are clear and user-friendly to avoid confusion or irritation. One best practice is to use a unique token in the activation link that is generated securely and is not easily guessable. Additionally, provide clear instructions in the email or message accompanying the activation link to guide the user on how to activate their account.

<?php

// Generate a unique token for activation link
$token = bin2hex(random_bytes(16));

// Store the token in the database along with the user's email

// Send the activation link to the user's email
$activationLink = "http://example.com/activate.php?token=$token";

// Include clear instructions in the email
$message = "Please click on the following link to activate your account: $activationLink";

// Send the email to the user