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`admin.php`

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<?php 
require_once("check_login.php");
require_once("database_connection.php");

# shorthanded if som tar hand om meddelandet
$mess=isset($_GET['mess']) ? "<p class='text-error'>".$_GET['mess']."</p>" : "";

# Gör anropet till databasen
$sql = "SELECT * FROM user ORDER BY userId;";
$stm = $pdo->prepare($sql);
$stm->execute();
# fetchAll() eftersom vi kan få fleraposter
$res = $stm->fetchAll(PDO::FETCH_ASSOC);

# $table lagrar hela tabellen som byggs upp
$table = "\n<table class='table table-striped table-hover'>";
$table .= "\n  <thead>\n  <tr>\n        <th>userId</th>\n      <th>username</th>
\n      <th>password</th>\n      <th>händelse</th>\n    </tr>\n  </thead>\n  <tbody>";

# Loopa genom resultatet
foreach($res as $row){      # Bygger upp rad för rad
    $table .= "\n    <tr>";
    $table .= "\n      <td>".$row['userId']."</td>";
    $table .= "\n      <td>".$row['username']."</td>";
    $table .= "\n      <td>".$row['password']."</td>";
    $table .= "\n      <td>[<a href='delete_user.php?userId=".$row['userId']."'>ta bort</a>]
     [<a href='edit_user.php?userId=".$row['userId']."'>ändra</a>]</td>";
    $table .= "\n    </tr>";
}
$table .= "\n  </tbody>\n</table>";
?>

<!DOCTYPE html>
<html lang="sv">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie-edge">
    <title>Inloggnignsapplikation</title>
    <link rel="stylesheet"
    href ="https://unpkg.com/spectre.css/dist/spectre.min.css">
</head>
<body>
    <div class="container">
        <div class="columns">
            <div class="column col-6">
                <h1>Admin</h1>
                <?php echo $mess; ?>
                <p>Du är inloggad som <?php echo $_SESSION['username'];?></p>
                <p><a href="logout.php">Logga ut</a></p>
                <h2>Användare</h2>
                <p><a href="add_user.php">Lägg till ny användare</a></p>
                <?php echo $table; ?>
            </div>
        </div>
    </div>
</body>
</html>