How can Typo3 potentially replace self-written PHP scripts in web development?

Typo3 can potentially replace self-written PHP scripts in web development by providing a robust content management system that offers features like user authentication, content editing, and plugin integration out of the box. This can save developers time and effort in creating these functionalities from scratch, allowing them to focus on customizing the website's design and functionality.

<?php
// Example of a simple self-written PHP script for user authentication

$username = "admin";
$password = "password";

if ($_POST['username'] == $username && $_POST['password'] == $password) {
    // Authentication successful
    echo "Welcome, $username!";
} else {
    // Authentication failed
    echo "Invalid username or password.";
}
?>