Are there any specific PHP functions or features that are particularly useful for building a members system?

When building a members system in PHP, it is essential to have features for user authentication, registration, login, and user profile management. PHP provides useful functions like password_hash() for securely hashing passwords, password_verify() for verifying hashed passwords, session_start() for managing user sessions, and database functions like mysqli_query() for interacting with a database to store user information. 

// Example code snippet for user registration
<?php
// Connect to database
$connection = mysqli_connect("localhost", "username", "password", "database");

// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST["username"];
    $password = $_POST["password"];
    
    // Hash the password
    $hashed_password = password_hash($password, PASSWORD_DEFAULT);
    
    // Insert user information into database
    $query = "INSERT INTO users (username, password) VALUES ('$username', '$hashed_password')";
    mysqli_query($connection, $query);
    
    // Redirect to login page
    header("Location: login.php");
    exit();
}
?>

Keywords

authentication session management password hashing user roles database integration

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