Php登录页面代码问题。登录页加载消息显示无效登录

Question

每次在登录页面加载消息时，显示入侵登录。它不是检查if条件是否直接转到。我重复我的sql查询，它运行得很好。但我不明白我在哪里出了错。你能帮帮我吗。

我下面的代码，

<?php
    #$error = "";
        $servername = "localhost";
        $username = "";
        $password = "";
        $dbname = "lg_db";
        $tb_name = "lgin";

        mysql_connect("$servername", "$username", "$password")or die("Cannot connect");
        mysql_select_db("$dbname")or die("Cannot connect to Database");

        $username = $_POST['username'];
        $pass = $_POST['password'];
$username=stripslashes($username);
$pass=stripslashes($pass);
$username=mysql_real_escape_string($username);
$pass=mysql_real_escape_string($pass);

        $sql="SELECT * FROM $tb_name WHERE Name='$username' and Password='$pass'";

        $result=mysql_query($sql);

        $count1=mysql_num_rows($result);

        if($count1 >=1)
        {
            session_start();
           $_SESSION['simple_login'] = $username;
            header("Location: index_new.php");
            exit();

        }else{
                 $error="Invalid Login";
        }
?>

Answer 1

感谢您的支持和帮助！我的问题解决了。我已经添加了if($_SERVER["REQUEST_METHOD"] == "POST")，并在此之前添加了html文件中的数据。