How to Set up Email Verification in PHP via a Verification Token: Complete Guide

Email verification confirms that an address exists and can receive messages, while validation primarily checks whether its format is valid. The tutorial outlines a PHP-based registration and authentication workflow using PHPMailer with Mailtrap SMTP rather than PHP’s native mail() function, beginning with a basic HTML form that collects a username, email address, and password. It demonstrates preliminary address checks through PHP validation and MX-record lookups, then explains how to generate either long random tokens or numeric verification codes, store user credentials, tokens, and verification status in a MySQL users table, and send verification messages through configured SMTP settings. Finally, it provides a token-verification flow in which a user visits a link, the application queries the database for the token, marks the account as verified, and removes the used token, helping maintain a more reliable and authenticated user database.

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