登錄后顯示用戶詳細信息

Question

我想在登錄后顯示所有用戶詳細信息，但只顯示“數組”一詞。 此外，唯一顯示的是用戶，而不是其他人，即名字、姓氏等。

session_start();
if(!$_SESSION['user']) {

header("location: login.php");
}
$conn = mysql_connect("localhost","root","");
mysql_select_db("dbname",$conn);
$query = "
    SELECT
        id,
        username,
        firstname,
        surname,
        address1
    FROM users 
    WHERE user = '".$_SESSION['user']['username']['firstname']['surname'] 
    ['address1']."'
     ";
    ?>

    <label for="usermail">User Email</label>
    <h7><?php echo $_SESSION['user']; ?></h7>
    <label for="line2">Line 2</label>
    <h7><?php echo $_SESSION['address1']; ?></h7>

login.php 文件是：

session_start();
if($_SESSION['user']!=''){header("Location:welcome.php");}
$dbh=new PDO('mysql:dbname='';localhost', 'root', '');

$email=$_POST['mail'];
$password=$_POST['pass'];
if(isset($_POST) && $email!='' && $password!=''){
    $sql=$dbh->prepare("SELECT id,password,psalt FROM users WHERE 
    username=?");
    $sql->execute(array($email));
    while($r=$sql->fetch()){
        $p=$r['password'];
        $p_salt=$r['psalt'];
        $id=$r['id'];
    }
    $site_salt="salt1";/
    $salted_hash = hash('sha256',$password.$site_salt.$p_salt);
    if($p==$salted_hash){
        $_SESSION['user']=$id;
        header("Location:welcome.php");
    }else{
        echo "Username OR Password is Incorrect...";
    }
}

Answer 1

我建議不要把事情復雜化，因為它可以在一個非常簡單的查詢中完成。 歡迎.php頁面

<?php
session_start();
if($_SESSION['user']){
$userid = $_SESSION['user'];
}else{
//your redirection;
}
$conn = mysql_connect("localhost","root","");
mysql_select_db("dbname",$conn);
$query = ("SELECT * FROM users WHERE id = '$userid'");
?>

<label for="usermail">User Email</label>
<h7><?php echo $query['yourcolumnname']; ?></h7>

<label for="line2">Line 2</label>
<h7><?php echo $query['yourcolumnname']; ?></h7>
......

要指定更多參數，它看起來像

"SELECT * FROM user 
where id = '$userid'
AND useremail = '$useremail'
AND.........")