registration.php

<?php include "includes/db.php";?>
 <?php include "includes/header.php";?>


<?php

if (isset($_POST['submit'])) {

    $username = trim($_POST['username']);
    $email = trim($_POST['email']);
    $password = trim($_POST['password']);

    $error = [
        'username' => '',
        'email' => '',
        'password' => '',
    ];

    if (strlen($username) < 4) {

        $error['username'] = 'Username needs to be longer ';

    }

    if ($username == '') {

        $error['username'] = 'Username cannot be empty';

    }
    if (username_exists($username)) {

        $error['username'] = 'Username already exists, pick another one';

    }
    if ($email == '') {

        $error['email'] = 'Email cannot be empty';

    }
    if (email_exists($email)) {

        $error['email'] = 'Email already exists, <a href="index.php">Please login </a>';

    }
    if ($password == '') {

        $error['password'] = 'password cannot be empty';

    }

    foreach ($error as $key => $value) {
      
        if(empty($value)){

            unset($error[$key]);
            // register_user($username, $email, $password);
            // login_user($username,$password);
        }

    } //foreach

    if(empty($error)){

        register_user($username,$email,$password);
       // login_user($username,$password);   //function end redirect path not set
    }

}

?>

    <!-- Navigation -->

    <?php include "includes/navigation.php";?>


    <!-- Page Content -->
    <div class="container">

<section id="login">
    <div class="container">
        <div class="row">
            <div class="col-xs-6 col-xs-offset-3">
                <div class="form-wrap">
                <h1>Register</h1>
                    <form role="form" action="registration.php" method="post" id="login-form" autocomplete="off">
                                           <div class="form-group">
                            <label for="username" class="sr-only">username</label>
                            <input type="text" name="username" id="username" class="form-control" placeholder="Enter Desired Username"
                            autocomplete="on" 
                            value="<?php echo isset($username)? $username : '' ?>">
                            <p><?php echo isset($error['username'])? $error['username'] : '' ?></p>
                        </div>
                         <div class="form-group">
                            <label for="email" class="sr-only">Email</label>
                            <input type="email" name="email" id="email" class="form-control" placeholder="somebody@example.com"
                            autocomplete="on" 
                            value="<?php echo isset($email)? $email : ''?>" >
                            <p><?php echo isset($error['email'])? $error['email'] : '' ?></p>
                        </div>
                         <div class="form-group">
                            <label for="password" class="sr-only">Password</label>
                            <input type="password" name="password" id="key" class="form-control" placeholder="Password">
                            <p><?php echo isset($error['password'])? $error['password'] : '' ?></p>
                        </div>

                        <input type="submit" name="submit" id="btn-login" class="btn btn-custom btn-lg btn-block" value="Register">
                    </form>

                </div>
            </div> <!-- /.col-xs-12 -->
        </div> <!-- /.row -->
    </div> <!-- /.container -->
</section>


        <hr>



<?php include "includes/footer.php";?>