Question

完整错误为： PHP可恢复的致命错误：在第11行的C：\ inetpub \ wwwroot \ storeadmin \ index.php中，类mysqli_result的对象无法转换为字符串。这是在上一页上，用户使用数据库中已经存在的用户名和密码登录。然后将这些数据传递到此页面上。

代码如下：

    <?php 
    // 
    // 
    //
    session_start();
    if (!isset($_SESSION["manager"])) {
        header("location: admin_login.php"); 
        exit();
    }
    // Be sure to check that this manager SESSION value is in fact in the database
    $managerID = preg_replace('#[^0-9]#i', '', $_SESSION["id"]); // filter everything but numbers and letters
    //$managerID = $_SESSION["id"];

    $manager = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["manager"]); // filter everything but numbers and letters
    //$manager = $_SESSION["manager"];

    $password = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["password"]);         // filter everything but numbers and letters
    //$password = $_SESSION["password"];

    // Run mySQL query to be sure that this person is an admin and that their password session var equals the database information
    // Connect to the MySQL database  
    include "../storescripts/connect_to_mysql.php"; 
    $sql = mysqli_query($dbcon, "SELECT * FROM admin_users WHERE username='$manager' AND password='$password'"); // query the person
    //print(strval(new $sql));
    // ------- MAKE SURE PERSON EXISTS IN DATABASE ---------
    $existCount = mysqli_num_rows($sql); // count the row nums
    if ($existCount == 0) { // evaluate the count
         echo "Your login session data is not on record in the database.";
         exit();
    }
    ?>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Store Admin Area</title>
    <link rel="stylesheet" href="../style/style.css" type="text/css" media="screen" />
    </head>

    <body>
    <div align="center" id="mainWrapper">
      <?php include_once("../template_header.php");?>
      <div id="pageContent"><br />
        <div align="left" style="margin-left:24px;">
          <h2>Hello <?php echo $manager ?>, what would you like to do today?</h2>
          <h3>Your id is: <?php echo $managerID ?></h3>
          <h3>Your password is: <?php echo $password ?></h3>
          <p><a href="inventory_list.php">Manage Pre-built</a><br />
          <a href="components_list.php">Manage Components </a><br />
          <a href="add_user.php">Add Users</a></p>
        </div>
        <br />
      <br />
      <br />
      </div>
      <?php include_once("../template_footer.php");?>
    </div>
    </body>
    </html>

PHP可恢复的致命错误：无法将类mysqli_result的对象转换为字符串

0 个答案: