PHP int检查不起作用

Question

嗯，我已经尝试过建立排名系统，但它似乎没有用？ 我是新人，但学习请放轻松。 这是我检查用户信息的地方

GetInfo.php     

    # Check if user is valid
    session_start();
    if(!isset($_SESSION['username'])) {
        header('location: login.php');
        die();
    } else {
        $my_username = $_SESSION['username'];
    }

    # Get User Information
    $db_get_user = mysqli_query($con, "SELECT * FROM users WHERE username='$my_username'");
    # Get The User Information 
    $row = mysqli_fetch_array($db_get_user);
    $my_email = $row['email'];
    if($my_rank = $row['rank'] = 0){
        echo '000';
    }else if($my_rank = $row['rank'] = 1){
        echo '111';
    }else if($my_rank = $row['rank'] = 2){
        echo '222';
    }else if($my_rank = $row['rank'] = 3){
        echo '333';
    }else if($my_rank = $row['rank'] = 4){
        echo '444';
    }else if($my_rank = $row['rank'] = 5){
        echo '555';
    }

?>

Answer 1

您是否只是想将$ my_rank设置为等于$ row ['rank']？

$my_rank = $row['rank'];
if($my_rank == 0){
    echo '000';
}else if($my_rank == 1){
    echo '111';
}else if($my_rank == 2){
    echo '222';
}else if($my_rank == 3){
    echo '333';
}else if($my_rank == 4){
    echo '444';
}else if($my_rank == 5){
    echo '555';
}