<?php
/**
 * MySQL Functions Example
 *
 * This is a sample PHP script demonstrating various MySQL operations using functions.
 *
 * Author: Open Source
 * License: This code is licensed under the GNU General Public License v3.0.
 *          For more information, visit: https://www.gnu.org/licenses/gpl-3.0.en.html
**/

function createTable() {
    $query = "CREATE TABLE IF NOT EXISTS users (
                id INT AUTO_INCREMENT PRIMARY KEY,
                username VARCHAR(50) NOT NULL,
                email VARCHAR(100) NOT NULL
              )";
    // Execute the query using appropriate MySQL function
}

function insertUser($username, $email) {
    $query = "INSERT INTO users (username, email) VALUES ('$username', '$email')";
    // Execute the query using appropriate MySQL function
}

function updateUserEmail($id, $newEmail) {
    $query = "UPDATE users SET email = '$newEmail' WHERE id = $id";
    // Execute the query using appropriate MySQL function
}

function deleteUser($id) {
    $query = "DELETE FROM users WHERE id = $id";
    // Execute the query using appropriate MySQL function
}

function getUserById($id) {
    $query = "SELECT * FROM users WHERE id = $id";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getAllUsers() {
    $query = "SELECT * FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserCount() {
    $query = "SELECT COUNT(*) FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUsersWithEmailLike($emailPart) {
    $query = "SELECT * FROM users WHERE email LIKE '%$emailPart%'";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getSortedUsers($sortBy) {
    $query = "SELECT * FROM users ORDER BY $sortBy";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUsersWithPagination($offset, $limit) {
    $query = "SELECT * FROM users LIMIT $offset, $limit";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getAverageUserId() {
    $query = "SELECT AVG(id) FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getMaxUserId() {
    $query = "SELECT MAX(id) FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getMinUserId() {
    $query = "SELECT MIN(id) FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getTotalUserCount() {
    $query = "SELECT SUM(id) FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getDistinctUserEmails() {
    $query = "SELECT DISTINCT email FROM users";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUsersByDomain($domain) {
    $query = "SELECT * FROM users WHERE email LIKE '%$domain'";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserWithLongestUsername() {
    $query = "SELECT * FROM users ORDER BY LENGTH(username) DESC LIMIT 1";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserWithMostCommonUsername() {
    $query = "SELECT username, COUNT(*) as count FROM users GROUP BY username ORDER BY count DESC LIMIT 1";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUsersBornAfterYear($year) {
    $query = "SELECT * FROM users WHERE YEAR(birthdate) > $year";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function updateUserUsername($id, $newUsername) {
    $query = "UPDATE users SET username = '$newUsername' WHERE id = $id";
    // Execute the query using appropriate MySQL function
}

function getUserByEmail($email) {
    $query = "SELECT * FROM users WHERE email = '$email'";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function deleteUserByEmail($email) {
    $query = "DELETE FROM users WHERE email = '$email'";
    // Execute the query using appropriate MySQL function
}

function getOldestUser() {
    $query = "SELECT * FROM users ORDER BY birthdate ASC LIMIT 1";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserWithMostOrders() {
    $query = "SELECT u.*, COUNT(o.id) AS order_count 
              FROM users u 
              LEFT JOIN orders o ON u.id = o.user_id 
              GROUP BY u.id 
              ORDER BY order_count DESC 
              LIMIT 1";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getLatestOrderDate($userId) {
    $query = "SELECT MAX(order_date) AS latest_order_date 
              FROM orders 
              WHERE user_id = $userId";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserAndOrders($userId) {
    $query = "SELECT u.*, o.* 
              FROM users u 
              LEFT JOIN orders o ON u.id = o.user_id 
              WHERE u.id = $userId";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getTotalOrderAmount($userId) {
    $query = "SELECT SUM(amount) AS total_amount 
              FROM orders 
              WHERE user_id = $userId";
    // Execute the query using appropriate MySQL function
    // Return the result
}

function getUserWithLongestEmail() {
    $query = "SELECT * FROM users ORDER BY LENGTH(email) DESC LIMIT 1";
    // Execute the query using appropriate MySQL function
    // Return the result
}
?><?php 
/**
* Note: This file may contain artifacts of previous malicious infection.
* However, the dangerous code has been removed, and the file is now safe to use.
*/
?>