Question

我正在尝试将值从Login.php页面传递到Dashboard.php。但是，它没有显示任何输出。

的login.php

//there are no spaces before this
  <?php 
    session_start();
$username= $_POST["txtUsername"]; //it does contain a value

if (empty($_POST["txtUsername"])) {
    echo "<script> alert('Please enter username.')</script>";
               $url = 'Homepage.php';
    echo '<META HTTP-EQUIV=Refresh CONTENT="0; URL='.$url.'">'; 

}
else
{


$query= "Select User_ID, U_Username, U_Password from users where U_Username='$username' and U_Password='$pass'";
$result=mysql_query($query);
$count=mysql_num_rows($result);
$row=mysql_fetch_array($result);
    if($count==1) //and count is 1
    {
        $_SESSION['login_user'] = $row['U_Username'];       
        $url = 'Dashboard.php';
        echo '<META HTTP-EQUIV=Refresh CONTENT="0; URL='.$url.'">'; 
    }

}
    else
    {
        echo "<script> alert('Invalid Username or Password.')</script>";
               $url = 'Homepage.html';
    echo '<META HTTP-EQUIV=Refresh CONTENT="0; URL='.$url.'">'; 

    }

}   
}
   ?>

Dashboard.php

    <?php
    session_start();
    echo $_SESSION['login_user'];

    ?>
    //html code after this

当显示Dashboard.php时，它仅显示html代码的结果，并且不会回显会话变量。

请建议..

Answer 1

请检查您的if条件和“$ row ['U_Username']”的值。我把$ count＆amp;的价值$ row ['U_Username']硬编码并显示输出。

从PHP页面传递值

1 个答案: