php - 仅显示登录用户数据

Question

这是我的 setting.php 代码:

<?php session_start();
include 'conn.php';
include '../includes/layouts/header.php';
if(!isset($_SESSION['user']))
{
    header("location:signin.php");
}
if(isset($_SESSION['update']))
{
    echo $_SESSION['update'];
    unset($_SESSION['update']);
}
$sql="SELECT * FROM signup";
$qry=mysql_query($sql);
$rows=mysql_fetch_array($qry);
?>

    <div id="main">
        <div id="navigation">
            <div class="">
                Welcome to LMS
                <ul>
                    <li><a href="#"><?php echo $_SESSION['user']; ?></a>
                        <ul>
                            <li><a href="application.php">Send Leave Application</a></li>
                            <li><a href="setting.php">Setting</a></li>
                            <li><a href="logout.php">Logout</a></li>
                        </ul>
            </div>
        &nbsp;
        </div>
        <div id="page">


            <form method="post" action="update.php">
                <div class="reg_section">
                    <h3>Your Personal Information</h3>

                    <input type="text" name="fname" value="<?php echo $rows[1];?>" placeholder="First Name"><br>
                    <input type="text" name="lname" value="<?php echo $rows[2];?>" placeholder="Last Name"><br>
                    <input type="text" name="uname" value="<?php echo $rows[3];?>" placeholder="Desired Username"><br>
                    <input type="text" name="email" value="<?php echo $rows[4];?>" placeholder="Email"><br>
                    <input type="text" name="department" value="<?php echo $rows[5];?>" placeholder="Department"><br>
                    <input type="text" name="id" value="<?php echo $rows[6];?>" placeholder="Id #"/><br>
                    <input type="text" name="phone" value="<?php echo $rows[7];?>" placeholder="Phone #"/><br>

                </div>
                <div class="reg_section">
                    <h3>Your Password</h3>
                    <input type="password" name="pass" value="<?php echo $rows[8];?>" placeholder="Your Password"><br>
                    <input type="password" name="cpass" value="<?php echo $rows[8];?>" placeholder="Confirm Password">
                </div>
                <div class="reg_section">
                    <h3>Your Address</h3>
                    <input type="text" name="address" value="<?php echo $rows[9];?>" placeholder="Address">
                </div>
                <p class="submit"><input type="submit" name="submit" value="Update Info"></p>

            </form>

        </div>
    </div>





<?php include '../includes/layouts/footer.php' ?>

这是 Update.php 代码:

<?php session_start();
include 'conn.php';
if(isset($_POST['submit']))
{
    $fname=$_POST['fname'];
    $lname=$_POST['lname'];
    $user=$_POST['uname'];
    $email=$_POST['email'];
    $depart=$_POST['department'];
    $id=$_POST['id'];
    $phone=$_POST['phone'];
    $pass=$_POST['pass'];
    $address=$_POST['address'];
    $msg="Record Update Successfuly";
    $qry="UPDATE  signup SET First_Name='$fname',Last_Name='$lname',Username='$user',Email='$email',Department='$depart',Employe_Id='$id',Phone='$phone',Password='$pass',Address='$address' WHERE Username='$user'";

    if(mysql_query($qry))
    {

        header('location:setting.php');
        echo $_SESSION['update']=$msg;
    }
    else
    {
        echo mysql_error();
    }
}
?>

现在，我希望只有登录用户才能更改他们的记录，并且表单应该包含他们自己的数据，但我做不到。当我登录页面时，它只会显示数据库的第一条记录，但我希望它只显示已登录的用户记录。我该怎么做？

……

Answer 1

当您应该考虑采用 mysqli 或 pdo 时，我不会讨论使用 mysql。

您正在选择查询中的所有记录。您只需要选择所需的一个。假设您正在设置用户在 session 中，您可以这样调用它。

例如:$sql="SELECT * FROM signup WHERE userId = '$_SESSION['userId']'";