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html登陆跳转到php页面连接数据库,提示提交未成功

WBOY
WBOYOriginal
2016-06-23 13:18:441641browse

这是HTML中的form:


                

                    学号
                    

                        
                        


                    

                

                

                    
                    

                        
                        


                    

                

                

                    
                    

                        
                        立即注册
                    

                

            
 





这是php的登陆连接数据库php:
if(isset($_POST["submit"])&&$_POST["submit"]=="登陆")
{
    $user = $_POST["username"];
    $psw = $_POST["password"];
    if($user == "" || $psw == "")
    {
        echo "<script>alert('请输入用户名或密码!'); history.go(-1);</script>";
    }
    else
    {
        $con=mysql_connect("127.0.0.1","root","1234");
        if (!$con)
        {
            die('Could not connect: ' . mysql_error());
        }
        mysql_select_db("vote");
        mysql_query("set names 'utf-8'");
        $sql = "select 用户名 from 密码表 where 用户名 = '$_POST[username]' and 密码 = '$_POST[password]'";
        $result = mysql_query($sql);
        if($result)
        {
            echo $username,' 欢迎你!进入 用户中心
';  
        }
        else
        {
            echo "<script>alert('用户名或密码不正确!');history.go(-1);</script>";
        }
    }
}
else
{
    echo "<script>alert('提交未成功!'); history.go(-1);</script>";
}
?>


回复讨论(解决方案)

isset($_POST["submit"])
这句phpif条件为空,没有进入php程序,可是form中不是给它传值了吗

你先打印$_POST["submit"]看看是什么

form表单提交不了button   改成input吧


$_POST["submit"]=="登陆"
表单与处理程序不在一个文件时,这样判断存在一定风险
需要两个文件的编码一致!

$_POST["submit"]=="登陆"


你先打印$_POST["submit"]看看是什么




改成input还是没有用?

不知道怎么回事,成功了。。。谢谢大家了

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