Search the Community

I just started Beginners PHP course, when i use echo to display the result, it shows nothing. When i open beginners course file with forms it doesnt display echo on the screen as well. Can someone help me solve this problem?

Php Gurus, I built a registration.php but I know not why I see a blank page after clicking "Register" button. Ignore the <center> tag for the time being. Will replace that with <p align> tag. I put echoes on conditions to see which part of the conditions get triggered. But the echoes don't occur. And, out of the following 2, which one suits my context ? $row = mysqli_fetch_array($result, MYSQLI_ASSOC); // Use this line or next ? $row = mysqli_stmt_fetch($stmt); //Use this line or previous ? registration.php <?php /* ERROR HANDLING */ declare(strict_types=1); ini_set('display_errors', '1'); ini_set('display_startup_errors', '1'); error_reporting(E_ALL); mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT); include 'config.php'; //Step 1: Before registering User account, check if User is already registered or not. //Check if User is already logged-in or not. if (is_logged() === true) { die("You are already logged-in! No need to register again!"); } if ($_SERVER['REQUEST_METHOD'] == "POST") { //Step 2: Check User Submitted Details. //Check if user made all the required inputs or not. if (isset($_POST["username"]) && isset($_POST["password"]) && isset($_POST["password_confirmation"]) && isset($_POST["email"]) && isset($_POST["email_confirmation"]) && isset($_POST["first_name"]) && isset($_POST["surname"]) && isset($_POST["gender"])) { //Step 3: Check User details for matches against database. If no matches then validate inputs and register User account. //Create variables based on user inputs. $username = trim($_POST["username"]); $password = $_POST["password"]; $password_confirmation = $_POST["password_confirmation"]; $email = trim($_POST["email"]); $email_confirmation = trim($_POST["email_confirmation"]); $first_name = trim($_POST["first_name"]); $surname = trim($_POST["surname"]); $gender = $_POST["gender"]; $account_activation_code = sha1( (string) mt_rand(5, 30)); //Type Casted the INT to STRING on the 1st parameter of sha1 as it needs to be a STRING. $account_activation_link = "http://www.".$site_domain."/".$social_network_name."/activate_account.php? email=".$_POST['email']."&account_activation_code=".$account_activation_code.""; $account_activation_status = 0; // 1 = active; 0 = not active. $hashed_password = password_hash($password, PASSWORD_DEFAULT); //Encrypt the password. //Select Username and Email to check against Mysql DB if they are already registered or not. $stmt = mysqli_prepare($conn, "SELECT usernames, emails FROM users WHERE usernames = ? OR emails = ?"); mysqli_stmt_bind_param($stmt, 'ss', $username, $email); mysqli_stmt_execute($stmt); $result = mysqli_stmt_bind_result($stmt, $db_username, $db_email); //$row = mysqli_fetch_array($result, MYSQLI_ASSOC); // Use this line or next ? $row = mysqli_stmt_fetch($stmt); //Use this line or previous ? // Check if inputted Username is already registered or not. if ($row['usernames'] == $username) { $_SESSION['error'] = "That username is already registered."; exit(); // Check if inputted Username is between the required 8 to 30 characters long or not. } elseif (strlen($username) < 8 || strlen($username) > 30) { $_SESSION['error'] = "Username must be between 8 to 30 characters long!"; exit(); // Check if both inputted Emails match or not. } elseif ($email != $email_confirmation) { $_SESSION['error'] = "Emails don't match!"; exit(); // Check if inputed Email is valid or not. } elseif (!filter_var($email, FILTER_VALIDATE_EMAIL)) { $_SESSION['error'] = "Invalid email! Insert your real Email in order for us to email you your account activation details."; exit(); // Check if inputted Email is already registered or not. } elseif ($row['emails'] == $email) { $_SESSION['error'] = "That email is already registered."; exit(); // Check if both inputted Passwords match or not. } elseif ($password != $password_confirmation) { $_SESSION['error'] = "Passwords don't match."; exit(); // Check if Password is between 8 to 30 characters long or not. } elseif (strlen($password) < 8 || strlen($password) > 30) { $_SESSION['error'] = "Password must be between 6 to 30 characters long!"; exit(); echo "line 88"; } else { //Insert the user's inputs into Mysql database using php's sql injection prevention method "Prepared Statements". $stmt = mysqli_prepare($conn, "INSERT INTO users(usernames, passwords, emails, first_names, surnames, genders, accounts_activations_codes, accounts_activations_statuses) VALUES (?, ?, ?, ?, ?, ?, ?, ?)"); mysqli_stmt_bind_param($stmt, 'sssssssi', $username, $hashed_password, $email, $first_name, $surname, $gender, $account_activation_code, $account_activation_status); mysqli_stmt_execute($stmt); echo "line 96"; //Check if user's registration data was successfully submitted or not. if (!$stmt) { $_SESSION['error'] = "Sorry! Our system is currently experiencing a problem registering your account! You may try registering some other time."; echo "line 102"; exit(); } else { echo "line 107"; //Email the account activation link for user to click it to confirm their email and activate their new account. $to = $email; $subject = "Your ".$site_name." account activation details!"; $body = nl2br(" ===============================\r\n ".$site_name." \r\n ===============================\r\n From: ".$site_admin_email."\r\n To: ".$email."\r\n Subject: Yours ".$subject." \r\n Message: ".$first_name." ".$surname."\r\n You need to click on this following <a href=".$account_activation_link.">link</a> to activate your account. \r\n"); $headers = "From: " . $site_admin_email . "\r\n"; if (!mail($to,$subject,$body,$headers)) { $_SESSION['error'] = "Sorry! We have failed to email you your account activation details. Please contact the website administrator!"; exit(); } else { echo "<h3 style='text-align:center'>Thank you for your registration!<br /> Check your email for details on how to activate your account which you just registered.</h3>"; exit(); } } } } } ?> <!DOCTYPE html> <html> <head> <title><?php $social_network_name ?> Signup Page</title> </head> <body> <div class ="container"> <?php // Error Messages. if (isset($_SESSION['error']) && !empty($_SESSION['error'])) { echo '<p style="color:red;">'.$_SESSION['error'].'</p>'; } ?> <?php //Session Messages. if (isset($_SESSION['message']) && !empty($_SESSION['message'])) { echo '<p style="color:red;">'.$_SESSION['error'].'</p>'; } ?> <?php //Clear Registration Session. function clear_registration_session() { //Clear the User Form inputs, Session Messages and Session Errors so they can no longer be used. unset($_SESSION['message']); unset($_SESSION['error']); unset($_POST); exit(); } ?> <form method="post" action=""> <center><h2>Signup Form</h2></center> <div class="form-group"> <center><label>Username:</label> <input type="text" placeholder="Enter a unique Username" name="username" required [A-Za-z0-9] value="<?php if(isset($_POST['username'])) { echo htmlentities($_POST['username']); }?>"> </center> </div> <div class="form-group"> <center><label>Password:</label> <input type="password" placeholder="Enter a new Password" name="password" required [A-Za-z0-9]></center> </div> <div class="form-group"> <center><label>Repeat Password:</label> <input type="password" placeholder="Repeat a new Password" name="password_confirmation" required [A-Za-z0-9]></center> </div> <div class="form-group"> <center><label>Email:</label> <input type="email" placeholder="Enter your Email" name="email" required [A-Za-z0-9] value="<?php if(isset($_POST['email'])) { echo htmlentities($_POST['email']); }?>"></center> </div> <div class="form-group"> <center><label>Repeat Email:</label> <input type="email" placeholder="Repeat your Email" name="email_confirmation" required [A-Za-z0-9] value="<?php if(isset($_POST['email_confirmation'])) { echo htmlentities($_POST['email_confirmation']); }?>"></center> </div> <div class="form-group"> <center><label>First Name:</label> <input type="text" placeholder="Enter your First Name" name="first_name" required [A-Za-z] value="<?php if(isset($_POST['first_name'])) { echo htmlentities($_POST['first_name']); }?>"></center> </div> <div class="form-group"> <center><label>Surname:</label> <input type="text" placeholder="Enter your Surname" name="surname" required [A-Za-z] value="<?php if(isset($_POST['surname'])) { echo htmlentities($_POST['surname']); }?>"></center> </div> <div class="form-group"> <center><label>Gender:</label> <input type="radio" name="gender" value="male" <?php if(isset($_POST['gender'])) { echo 'checked'; }?> required>Male<input type="radio" name="gender" value="female" <?php if(isset($_POST['gender'])) { echo 'checked'; }?> required>Female</center> </div> <center><button type="submit" class="btn btn-default" name="submit">Register!</button></center> <center><font color="red" size="3"><b>Already have an account ?</b><br> <a href="login.php">Login here!</a></font></center> </form> </div> </body> </html>