Question

当用户输入没有用户名或密码时，我无法回显页面，这是因为我的countreturnedrows（）== 0行。任何解决方案都将非常感谢。

<?php 
        ini_set("error_reporting",E_ALL & ~E_NOTICE);
        ini_set("display_errors",1);

        include_once $_SERVER['DOCUMENT_ROOT'] . "/flourish/toinclude.php";
        $mydb=new fDatabase("mssql", "finance","mytest","","ISOMTEACHING5\INFOSYS280",61495);
        $result = $mydb->query("SELECT * FROM person WHERE personname=%s AND password=%s", $_POST['username'], $_POST['password']);

        if($result->countReturnedRows() == 0)
        {
            echo "Sorry, but your username and password that you have entered doesn't exist.";
        }
        else
        {
            $fetchresult = $result->fetchRow();
            $userid = $fetchresult['username'];
            $isadmin = $fetchresult['admin'];
            header("location:mainpage.php");
        }

        ?>

Answer 1

将整个事物包装在另一个if语句中：

if ($_POST['username'] != '' || $_POST['password'] != '')
{
    include_once $_SERVER['DOCUMENT_ROOT'] . "/flourish/toinclude.php";
    $mydb=new fDatabase("mssql", "finance","mytest","","ISOMTEACHING5\INFOSYS280",61495);
    $result = $mydb->query("SELECT * FROM person WHERE personname=%s AND password=%s", $_POST['username'], $_POST['password']);

    if($result->countReturnedRows() == 0)
    {
        echo "Sorry, but your username and password that you have entered doesn't exist.";
    }
    else
    {
        $fetchresult = $result->fetchRow();
        $userid = $fetchresult['username'];
        $isadmin = $fetchresult['admin'];
        header("location:mainpage.php");
    }
}

这样，如果用户没有输入用户名或密码，它将跳过整个块。

echo正在默认的php登录页面上执行

1 个答案: