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devjewel01
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‎Extra/indexOld.php

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‎Extra/login 2

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Subproject commit ac37c8edff91c36d29678ce524054cc4c2f882fa

‎Extra/loging/config.php

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<?php
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/* Database credentials. Assuming you are running MySQL
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server with default setting (user 'root' with no password) */
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define('DB_SERVER', 'localhost');
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define('DB_USERNAME', 'root');
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define('DB_PASSWORD', '');
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define('DB_NAME', 'tuitionPoint');
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/* Attempt to connect to MySQL database */
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$link = mysqli_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_NAME);
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// Check connection
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if($link === false){
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die("ERROR: Could not connect. " . mysqli_connect_error());
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}
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?>

‎Extra/loging/db.sql

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CREATE TABLE users (
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id INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
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username VARCHAR(50) NOT NULL UNIQUE,
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password VARCHAR(255) NOT NULL,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP
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);

‎Extra/loging/index.php

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<?php
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// Include config file
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require_once "config.php";
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// Define variables and initialize with empty values
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$username = $password = $confirm_password = "";
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$username_err = $password_err = $confirm_password_err = "";
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// Processing form data when form is submitted
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if ($_SERVER["REQUEST_METHOD"] == "POST")
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{
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// Validate username
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if (empty(trim($_POST["username"]))) {
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$username_err = "Please enter a username.";
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} elseif (!preg_match('/^[a-zA-Z0-9_]+$/', trim($_POST["username"]))) {
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$username_err = "Username can only contain letters, numbers, and underscores.";
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} else {
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// Prepare a select statement
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$sql = "SELECT id FROM users WHERE username = ?";
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if ($stmt = mysqli_prepare($link, $sql)) {
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "s", $param_username);
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// Set parameters
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$param_username = trim($_POST["username"]);
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// Attempt to execute the prepared statement
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if (mysqli_stmt_execute($stmt)) {
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/* store result */
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mysqli_stmt_store_result($stmt);
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if (mysqli_stmt_num_rows($stmt) == 1) {
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$username_err = "This username is already taken.";
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} else {
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$username = trim($_POST["username"]);
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}
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} else {
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echo "Oops! Something went wrong. Please try again later.";
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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}
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// Validate password
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if (empty(trim($_POST["password"]))) {
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$password_err = "Please enter a password.";
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} elseif (strlen(trim($_POST["password"])) < 6) {
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$password_err = "Password must have atleast 6 characters.";
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} else {
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$password = trim($_POST["password"]);
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}
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// Validate confirm password
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if (empty(trim($_POST["confirm_password"]))) {
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$confirm_password_err = "Please confirm password.";
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} else {
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$confirm_password = trim($_POST["confirm_password"]);
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if (empty($password_err) && ($password != $confirm_password)) {
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$confirm_password_err = "Password did not match.";
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}
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}
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// Check input errors before inserting in database
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if (empty($username_err) && empty($password_err) && empty($confirm_password_err)) {
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// Prepare an insert statement
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$sql = "INSERT INTO users (username, password) VALUES (?, ?)";
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if ($stmt = mysqli_prepare($link, $sql)) {
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "ss", $param_username, $param_password);
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// Set parameters
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$param_username = $username;
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$param_password = password_hash($password, PASSWORD_DEFAULT); // Creates a password hash
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// Attempt to execute the prepared statement
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if (mysqli_stmt_execute($stmt)) {
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// Redirect to login page
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header("location: login.php");
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} else {
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echo "Oops! Something went wrong. Please try again later.";
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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}
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// Close connection
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mysqli_close($link);
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}
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Sign Up</title>
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<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
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<style>
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body {
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font: 14px sans-serif;
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}
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.wrapper {
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width: 360px;
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padding: 20px;
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}
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</style>
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</head>
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<body>
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<div class="wrapper">
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<h2>Sign Up</h2>
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<p>Please fill this form to create an account.</p>
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<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
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<div class="form-group">
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<label>Username</label>
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<input type="text" name="username" class="form-control <?php echo (!empty($username_err)) ? 'is-invalid' : ''; ?>" value="<?php echo $username; ?>">
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<span class="invalid-feedback"><?php echo $username_err; ?></span>
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</div>
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<div class="form-group">
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<label>Password</label>
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<input type="password" name="password" class="form-control <?php echo (!empty($password_err)) ? 'is-invalid' : ''; ?>" value="<?php echo $password; ?>">
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<span class="invalid-feedback"><?php echo $password_err; ?></span>
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</div>
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<div class="form-group">
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<label>Confirm Password</label>
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<input type="password" name="confirm_password" class="form-control <?php echo (!empty($confirm_password_err)) ? 'is-invalid' : ''; ?>" value="<?php echo $confirm_password; ?>">
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<span class="invalid-feedback"><?php echo $confirm_password_err; ?></span>
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</div>
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<div class="form-group">
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<input type="submit" class="btn btn-primary" value="Submit">
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<input type="reset" class="btn btn-secondary ml-2" value="Reset">
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</div>
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<p>Already have an account? <a href="login.php">Login here</a>.</p>
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</form>
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</div>
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</body>
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</html>

‎Extra/loging/login.php

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<?php
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// Initialize the session
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session_start();
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// Check if the user is already logged in, if yes then redirect him to welcome page
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if(isset($_SESSION["loggedin"]) && $_SESSION["loggedin"] === true){
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header("location: welcome.php");
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exit;
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}
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// Include config file
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require_once "config.php";
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// Define variables and initialize with empty values
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$username = $password = "";
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$username_err = $password_err = $login_err = "";
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// Processing form data when form is submitted
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if($_SERVER["REQUEST_METHOD"] == "POST"){
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// Check if username is empty
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if(empty(trim($_POST["username"]))){
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$username_err = "Please enter username.";
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} else{
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$username = trim($_POST["username"]);
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}
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// Check if password is empty
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if(empty(trim($_POST["password"]))){
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$password_err = "Please enter your password.";
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} else{
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$password = trim($_POST["password"]);
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}
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// Validate credentials
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if(empty($username_err) && empty($password_err)){
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// Prepare a select statement
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$sql = "SELECT id, username, password FROM users WHERE username = ?";
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if($stmt = mysqli_prepare($link, $sql)){
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// Bind variables to the prepared statement as parameters
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mysqli_stmt_bind_param($stmt, "s", $param_username);
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// Set parameters
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$param_username = $username;
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// Attempt to execute the prepared statement
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if(mysqli_stmt_execute($stmt)){
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// Store result
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mysqli_stmt_store_result($stmt);
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// Check if username exists, if yes then verify password
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if(mysqli_stmt_num_rows($stmt) == 1){
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// Bind result variables
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mysqli_stmt_bind_result($stmt, $id, $username, $hashed_password);
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if(mysqli_stmt_fetch($stmt)){
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if(password_verify($password, $hashed_password)){
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// Password is correct, so start a new session
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session_start();
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// Store data in session variables
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$_SESSION["loggedin"] = true;
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$_SESSION["id"] = $id;
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$_SESSION["username"] = $username;
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// Redirect user to welcome page
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header("location: welcome.php");
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} else{
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// Password is not valid, display a generic error message
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$login_err = "Invalid username or password.";
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}
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}
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} else{
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// Username doesn't exist, display a generic error message
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$login_err = "Invalid username or password.";
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}
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} else{
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echo "Oops! Something went wrong. Please try again later.";
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}
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// Close statement
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mysqli_stmt_close($stmt);
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}
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}
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// Close connection
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mysqli_close($link);
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}
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?>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>Login</title>
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<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
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<style>
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body{ font: 14px sans-serif; }
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.wrapper{ width: 360px; padding: 20px; }
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</style>
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</head>
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<body>
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<div class="wrapper">
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<h2>Login</h2>
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<p>Please fill in your credentials to login.</p>
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<?php
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if(!empty($login_err)){
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echo '<div class="alert alert-danger">' . $login_err . '</div>';
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}
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?>
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<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
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<div class="form-group">
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<label>Username</label>
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<input type="text" name="username" class="form-control <?php echo (!empty($username_err)) ? 'is-invalid' : ''; ?>" value="<?php echo $username; ?>">
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<span class="invalid-feedback"><?php echo $username_err; ?></span>
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</div>
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<div class="form-group">
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<label>Password</label>
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<input type="password" name="password" class="form-control <?php echo (!empty($password_err)) ? 'is-invalid' : ''; ?>">
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<span class="invalid-feedback"><?php echo $password_err; ?></span>
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</div>
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<div class="form-group">
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<input type="submit" class="btn btn-primary" value="Login">
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</div>
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<p>Don't have an account? <a href="register.php">Sign up now</a>.</p>
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</form>
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</div>
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</body>
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</html>

‎Extra/loging/logout.php

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<?php
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// Initialize the session
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session_start();
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// Unset all of the session variables
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$_SESSION = array();
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// Destroy the session.
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session_destroy();
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// Redirect to login page
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header("location: login.php");
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exit;
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?>

‎Extra/loging/welcome.php

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<?php
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// Initialize the session
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session_start();
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// Check if the user is logged in, if not then redirect him to login page
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if(!isset($_SESSION["loggedin"]) || $_SESSION["loggedin"] !== true){
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header("location: login.php");
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exit;
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}
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?>

‎Extra/sign/.DS_Store

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