Question

 <html>    
    <head>
        <title>Gmail validation</title>
    </head>  
    <body bgcolor="pink">
        <form method="post" action="">
            <div class="container">``
                <span>User Name:</span>
                <input type="text" name="uname" placeholder="Enter your email" size="23" required>
                <span>Password:</span>
                <input type="password" name="upass" placeholder="Enter your password" size="23" required>
               <input type="submit" value="Sign in" name="submit"> &nbsp;&nbsp;&nbsp;&nbsp;
                <input type="button" value="Sign up" onclick="myFucntion()">
            </div>
        </form>
        <?php 
        if (isset($_POST['submit'])) {
            print_r($_POST);
            $username = $_POST['uname'];
            $password = $_POST['upass'];
            if ($username && $password) {
                $con = mysqli_connect("localhost", "root", "");
                mysqli_select_db($con, "sms");

                $rows = mysqli_num_rows($result);
                $result = mysqli_query($con, "SELECT * FROM student1 WHERE username = '$username' ");
                if ($rows == 1) {
                    while ($data = mysqli_fetch_assoc($result)) {
                        $dbusername = $data['username'];
                        $dbpassword = $data['password'];
                    }
                    if ($username == $dbusername && $password == $dbpassword) {
                        echo "Yes you are loged in";
                        //header("Location: ");
                    }
                    else
                    {
                        echo "Enter correct password";
                    }
                }
                else
                {
                    echo "Enter correct username";
                }
            }
            else
            {
                echo "Enter both username and password";
            }
        }
        ?>
    </body>
  </html>

我通过在php中检查数据库验证用户名和密码。

我收到以下错误

警告：mysqli_num_rows（）要求参数1为mysqli_result，boolean 给出。

注意：我的数据库名称：sms

  Table name: student1

如何解决这个问题。

如何通过数据库验证php中的电子邮件和密码？

0 个答案: