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Php 致命错误：调用成员函数fetch\u array？

php login phpmyadmin

Php 致命错误：调用成员函数fetch\u array？,php,mysqli,login,phpmyadmin,registration,Php,Mysqli,Login,Phpmyadmin,Registration,我试图创建一个登录表单，在该登录表单中，我使用fetch_array（）方法获取用户输入的字段，但它显示了一些错误： Login.php <?php include ("Connection.php"); ?> <?php if(isset($_POST['Login'])) { $Em = $_POST['form-email']; $Pw = $_POST['form-password']; $r

我试图创建一个登录表单，在该登录表单中，我使用fetch_array（）方法获取用户输入的字段，但它显示了一些错误：

Login.php

    <?php 
include ("Connection.php");

?>
<?php 
   if(isset($_POST['Login'])) 
   {
        $Em = $_POST['form-email'];
        $Pw = $_POST['form-password'];

        $result = $con->query("SELECT * FROM userdetails where Email='$Em' Password='$Pw'");

        $row = $result->fetch_assoc(MYSQLI_BOTH);

        session_start();
        $_SESSION["UserID"] = $row['UserID'];

        header('Location: index.php');


   }





 ?>
<!DOCTYPE html>
<html lang="en">

    <head>

        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>GTEC Registration Form Template</title>

        <!-- CSS -->
        <link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Roboto:400,100,300,500">
        <link rel="stylesheet" href="assets/bootstrap/css/bootstrap.min.css">
        <link rel="stylesheet" href="assets/font-awesome/css/font-awesome.min.css">
        <link rel="stylesheet" href="assets/css/form-elements.css">
        <link rel="stylesheet" href="assets/css/style.css">

        <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
        <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
        <!--[if lt IE 9]>
            <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
            <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
        <![endif]-->

        <!-- Favicon and touch icons -->


    </head>

    <body>



        <!-- Top content -->
        <div class="top-content">

            <div class="inner-bg">
                <div class="container">
                    <div class="row">
                        <div class="col-sm-7 text">
                            <h1><strong>GTEC Network</strong> Registration Form</h1>
                            <div class="description">
                                <p class="jumbotron">
                                    To be a premier Institution of choice in the region and become one of the leading educational Institutions in the country widely recognized for providing high quality, transformative and affordable value based education in the field of Engineering and Technology.
                                </p>
                            </div>
                            <div class="top-big-link">
                                <a class="btn btn-link-2" href="registrer.php">Sign Up!</a>
                            </div>
                        </div>
                        <div class="col-sm-5 form-box">
                            <div class="form-top">
                                <div class="form-top-left">
                                    <h3>Login</h3>
                                    <p>Fill in the form below to get instant access:<br/>
                                    Once you login your account ,<br/>
                                    You can access gtec network thereby you can view ur syllabus,timetable,updates,
                                    internal marks,results,also you can ur forum for many purpose</p>
                                </div>
                                <div class="form-top-right">
                                    <i class="fa fa-pencil"></i>
                                </div>
                            </div>
                            <div class="form-bottom">
                                <form role="form" action="" method="post" class="Login-form">

                                    <div class="form-group">
                                        <label class="sr-only" for="form-email">Email</label>
                                        <input type="email" name="form-email" placeholder="Email..." class="form-email form-control" id="form-email">
                                    </div>
                                    <div class="form-group">
                                        <label class="sr-only" for="form-password">Email</label>
                                        <input type="password" name="form-password" placeholder="Password..." class="form-password form-control" id="form-password">
                                    </div>

                                    <button type="submit" class="btn" name="Login">Login!</button>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

        </div>


        <!-- Javascript -->
        <script src="assets/js/jquery-1.11.1.min.js"></script>
        <script src="assets/bootstrap/js/bootstrap.min.js"></script>
        <script src="assets/js/jquery.backstretch.min.js"></script>
        <script src="assets/js/retina-1.1.0.min.js"></script>
        <script src="assets/js/scripts.js"></script>

        <!--[if lt IE 10]>
            <script src="assets/js/placeholder.js"></script>
        <![endif]-->

    </body>

</html>

<?php session_start();
?>
<!DOCTYPE html>
<html lang="en">

<head>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>GTEC NetWork</title>

    <!-- Bootstrap Core CSS -->
    <link href="css/bootstrap.min.css" rel="stylesheet">

    <!-- Custom CSS -->
    <link href="css/business-frontpage.css" rel="stylesheet">

    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
        <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
        <script src="https://oss.maxcdn.com/libs/respond.js/1.4.2/respond.min.js"></script>
    <![endif]-->

</head>

<body>
<?php echo $_SESSION['UserID'];?>

    <!-- Navigation -->
    <nav class="navbar navbar-inverse navbar-fixed-top" role="navigation">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">GTEC NetWork</a>
            </div>
            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav">
                    <li>
                        <a href="#">About</a>
                    </li>
                    <li>
                        <a href="#">Services</a>
                    </li>
                    <li>
                        <a href="#">Contact</a>
                    </li>
                    <li>
                        <a href="#"></a>
                    </li>
                </ul>
            </div>
            <!-- /.navbar-collapse -->
        </div>
        <!-- /.container -->
    </nav>

    <!-- Image Background Page Header -->
    <!-- Note: The background image is set within the business-casual.css file. -->
    <header class="business-header">
        <div class="container">
            <div class="row">
                <div class="col-lg-12">
                    <h1 class="tagline">GTEC Student Info System</h1>
                </div>
            </div>
        </div>
    </header>

    <!-- Page Content -->
    <div class="container">

        <hr>

        <div class="row">
            <div class="col-sm-8">
                <h2>What We Do</h2>
                <p>Introduce the visitor to the business using clear, informative text. Use well-targeted keywords within your sentences to make sure search engines can find the business.</p>
                <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Et molestiae similique eligendi reiciendis sunt distinctio odit? Quia, neque, ipsa, adipisci quisquam ullam deserunt accusantium illo iste exercitationem nemo voluptates asperiores.</p>
                <p>
                    <a class="btn btn-default btn-lg" href="#">Call to Action &raquo;</a>
                </p>
            </div>
            <div class="col-sm-4">
                <h2>Contact Us</h2>
                <address>
                    <strong>Start Bootstrap</strong>
                    <br>3481 Melrose Place
                    <br>Beverly Hills, CA 90210
                    <br>
                </address>
                <address>
                    <abbr title="Phone">P:</abbr>(123) 456-7890
                    <br>
                    <abbr title="Email">E:</abbr> <a href="mailto:#">name@example.com</a>
                </address>
            </div>
        </div>
        <!-- /.row -->

        <hr>

        <div class="row">
            <div class="col-sm-4">
                <img class="img-circle img-responsive img-center" src="http://placehold.it/300x300" alt="">
                <h2>Marketing Box #1</h2>
                <p>These marketing boxes are a great place to put some information. These can contain summaries of what the company does, promotional information, or anything else that is relevant to the company. These will usually be below-the-fold.</p>
            </div>
            <div class="col-sm-4">
                <img class="img-circle img-responsive img-center" src="http://placehold.it/300x300" alt="">
                <h2>Marketing Box #2</h2>
                <p>The images are set to be circular and responsive. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui.</p>
            </div>
            <div class="col-sm-4">
                <img class="img-circle img-responsive img-center" src="http://placehold.it/300x300" alt="">
                <h2>Marketing Box #3</h2>
                <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui.</p>
            </div>
        </div>
        <!-- /.row -->

        <hr>




    </div>
    <!-- /.container -->

    <!-- jQuery -->
    <script src="js/jquery.js"></script>

    <!-- Bootstrap Core JavaScript -->
    <script src="js/bootstrap.min.js"></script>

</body>
</html>



sql查询中存在语法错误。当您通过mysqli执行查询时，如果存在一些sql语法错误，方法$con->query（…）将返回boolean
false
。因此，在
$result
中有
false
值。

Php无法对布尔值调用方法：
$result->fetch_assoc（）
，因为布尔值是标量值，而不是对象。（对不起，我的英文版）
但是index.php中没有显示会话id，而且当我输入错误的密码时，它也会从SQL语法错误重定向到indexAside，您还存在一些安全问题：SQL注入和明文密码。理想情况下，会话固定也需要解决，但这不太紧急。尝试在phpmyadmin中执行查询，您将看到错误。另外：请阅读有关sql注入的内容。