signup.php

<?php
@include 'config.php';
if (isset($_POST['submit'])) {
    $name = mysqli_real_escape_string($conn, $_POST['name']);
    $email = mysqli_real_escape_string($conn, $_POST['email']);
    $pass = $_POST['password'];
    $cpass = $_POST['cpassword'];
    $select = " SELECT * FROM user_form WHERE email = '$email' && password = '$pass' ";
    $result = mysqli_query($conn, $select);
    if (mysqli_num_rows($result) > 0) {
        $error[] = 'user already exist!';
    } else {
        if ($pass != $cpass) {
            $error[] = 'password not matched!';
        } else {
            $insert = "INSERT INTO user_form(name, email, password) VALUES('$name','$email','$pass')";
            mysqli_query($conn, $insert);
            header('location:login.php');
        }
    }
};
?>

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Sign Up to EduZone</title>
    <link rel="shortcut icon" href="images/favicon.png" type="image/x-icon">
    <style>
        @import url("https://fonts.googleapis.com/css2?family=Noto+Sans:wght@700&family=Poppins:wght@400;500;600&display=swap");

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Poppins", sans-serif;
        }

        body {
            margin: 0;
            padding: 0;
            background: linear-gradient(120deg, white, #b435ff);
            height: 100vh;
            overflow: hidden;
        }

        .center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 400px;
            background: #b435ff;
            border-radius: 10px;
            box-shadow: 10px 10px 15px rgba(0, 0, 0, 0.05);
        }

        .center img {
            margin-left: 40%;
            margin-bottom: -8%;
        }

        .center h1 {
            color: white;
            text-align: center;
            padding: 20px 0;
            border-bottom: 1px solid whitesmoke;
        }

        .center h5 {
            color: white;
            text-align: center;
            padding: 20px 0;
            border-top: 1px solid whitesmoke;
        }

        a {
            text-decoration: none;
            color: whitesmoke;
            letter-spacing: 1px;
        }

        .center form {
            padding: 0 40px;
            box-sizing: border-box;
        }

        form .txt_field {
            position: relative;
            border-bottom: 2px solid whitesmoke;
            margin: 30px 0;
        }

        .txt_field input {
            width: 100%;
            padding: 0 5px;
            height: 40px;
            font-size: 16px;
            border: none;
            background: none;
            outline: none;
        }

        .txt_field label {
            position: absolute;
            top: 50%;
            left: 5px;
            color: whitesmoke;
            transform: translateY(-50%);
            font-size: 16px;
            pointer-events: none;
            transition: 0.5s;
        }

        .txt_field span::before {
            position: absolute;
            top: 40px;
            left: 0;
            width: 0%;
            height: 2px;
            background: #2691d9;
            transition: 0.5s;
        }

        .txt_field input:focus~label,
        .txt_field input:valid~label {
            top: -5px;
            color: #2691d9;
        }

        .txt_field input:focus~span::before,
        .txt_field input:valid~span::before {
            width: 100%;
        }

        input[type="submit"] {
            width: 100%;
            height: 50px;
            border: 1px solid;
            background: #2691d9;
            border-radius: 25px;
            font-size: 18px;
            color: #e9f4fb;
            font-weight: 700;
            cursor: pointer;
            outline: none;
            box-shadow: 1px 1px 24px 0px purple;
        }

        input[type="submit"]:hover {
            transition: 0.5s;
            background-color: whitesmoke;
            box-shadow: 2px 2px 26px 2px white;
            color: purple;
        }

        .signup_link {
            margin: 30px 0;
            text-align: center;
            font-size: 16px;
            color: whitesmoke;
        }

        .signup_link a {
            color: violet;
            text-decoration: none;
        }

        .signup_link a:hover {
            color: white;
            transition: 0.3s;
        }

        .center .error-msg {
            margin: 10px 0;
            display: block;
            background: gold;
            color: crimson;
            border-radius: 5px;
            font-size: 20px;
            padding: 10px;
            box-shadow: 2px 2px 26px 2px red;
        }
    </style>
</head>

<body>
    <div class="center">
        <a href="index.html">
            <img src="images/favicon.png" alt="" width="20%"></a>
        <h1>Sign-Up</h1>
        <?php
        if (isset($error)) {
            foreach ($error as $error) {
                echo '<span class="error-msg">' . $error . '</span>';
            };
        };
        ?>
        <form method="post">
            <div class="txt_field">
                <input type="text" name="name" required>
                <span></span>
                <label>Name</label>
            </div>
            <div class="txt_field">
                <input type="text" name="email" required>
                <span></span>
                <label>E-mail</label>
            </div>
            <div class="txt_field">
                <input type="password" name="password" required>
                <span></span>
                <label>Password</label>
            </div>
            <div class="txt_field">
                <input type="password" name="cpassword" required>
                <span></span>
                <label>Confirm Password</label>
            </div>
            <input type="submit" value="Sign-Up" name="submit">
            <div class="signup_link">
                Already a Member! <a href="login.php">Login</a>
            </div>
        </form>
        <h5><a href="index.html">
                Powered by EduZone
            </a></h5>
    </div>
</body>

</html>