表有，但所有的属性都丢失

我已经写了几个包含PHP代码的文件，如下所示：创建一个登录页面并输入用户名，密码和名称，并且您的cookie被盐渍和散列你可以编辑你的cookie。输入您的详细信息后，您应该能够看到您的数据显示在“用户”表中。然而，我所得到的MySQL是“ MySQL返回的查询结果为空（即零行）（查询花费0.0000秒。）”表有，但所有的属性都丢失

我有一个名为下面的“connect2000.php”的文件：

<?php 

$dbserver = "localhost"; 
$dbuser = "root"; 
$dbpassword = ""; 
$dbname = "tutorial"; 

$dbcon = mysqli_connect($dbserver, $dbuser, $dbpassword, $dbname); 
if(!$dbcon) { 
    die("Error connecting to database: " . mysqli_error()); 
    } 
    echo "You have connected successfully"; 

mysqli_select_db($dbcon, $dbname) or die("Unable to select database: " .  
mysqli_error()); 

$query = "CREATE TABLE users (
Username VARCHAR(30) NOT NULL, 
Password VARCHAR(100) NOT NULL, 
ID INT NOT NULL, 
Name VARCHAR (30) NOT NULL, 
Salt VARCHAR(100) NOT NULL, 
PRIMARY KEY (ID))"; 

$result = mysqli_query($dbcon, $query); 

if(!result) die("Database access failed: " . mysqli_error()); 
?>

而且我有一个名为下面的“register2000.php”的文件：

<?php 
require_once 'connect2000.php'; 
$connection = mysqli_connect("localhost", "root", "", "tutorial") or 
die("Couldn't connect 
to the server!"); 

//error reporting(0); 

if(isset($_POST['register'])){ 
    if(isset($_POST['username']) && isset($_POST['password'])) { 
    $username = mysqli_real_escape_string($_POST['username']); 
    $password = mysqli_real_escape_string(hash("sha512", 
    $_POST['password'])); 
    $name = ""; 
    if(isset($_POST['name'])) { 
     $name = mysqli_real_escape_string(strip_tags($_POST['name'])); 
    } 
     $check = mysqli_fetch_array(mysqli_query("SELECT * FROM `users` WHERE 
     `username` = '$username'")); 
     if($check != '0') { 
      die("That username already exists! Try <i>$username" .rand(1, 50). 
     "</i> instead 
      <a href = 'register2000.php'>&larr; Back</a>"); 
    } 
    if(!ctype_alnum($username)) { 
     die("Username contains special characters! Only numbers and letters 
    are permitted! 
     <a href = 'register.php'>&larr; Back</a>"); 
    } 
    if(strlen($username)>20) { 
     die("Username must not contain more than 20 characters! <a href = 
    'register2000.php'>&larr; Back</a>"); 
    } 
    $salt = hash("sha512", rand().rand().rand()); 
    mysqli_query("INSERT INTO `users` (`username`, `password`, `name`, 
    `salt`) VALUES ('$username', 
    '$password', '$name', '$salt')"); 
    setcookie("c_user", hash("sha512", $username), time() + 24 * 60 * 60, 
    "/"); 
    setcookie("c_salt", $salt, time() + 24 * 60 * 60, "/"); 
    die("Your account has been created and you are now logged in."); 
    } 
} 

echo " 
    <body style = 'font-family : verdana, sans-serif'> 
    <div style = 'width: 80%; padding: 5px 15px 5px; border: 1px solid 
    #e3e3e3; 
    background-color: #fff; color: #000; margin-left: auto;> 
    <h1>Register<h1> 
    <br /> 
    <form action = '' method = 'post'> 
     <table> 
     <tr> 
      <td> 
      <b>Username:</b> 
      </td> 
      <td> 
      <input type = 'text' name = 'username' style = 'padding: 4px;' 
     /> 
      </td> 
     </tr> 
     <tr> 
      <td> 
      <b>Password:</b> 
      </td> 
      <td> 
      <input type = 'password' name = 'password' style = 'padding: 
     4px;' /> 
      </td> 
     </tr> 
     <tr> 
      <td> 
      <b>Name:</b> 
      </td> 
      <td> 
      <input type = 'text' name = 'name' style = 'padding: 4px;' /> 
      </td> 
     </tr> 
     <tr> 
      <td> 
      <input type = 'submit' name = 'register' value = 'Register' /> 
      </td> 
     </tr> 
     </table> 
    </form> 
     <br /> 
     <h6> 
     No account? <a href='register2000.php'>Register!</a> 
     </h6> 
    </div> 
    </body> 
";

还有其他两个文件，“index2000.php”和逃逸盐渍饼干另一个文件。这两个文件与本次讨论毫不相干，methinks。我的问题是，请问您能告诉我为什么我没有看到我的数据出现在我的数据库中？表“用户”已创建，但没有任何属性。

来源

2015-02-24 Arnold Pine

'mysqli_real_escape_string（）'需要传递数据库参数。 http://php.net/manual/en/mysqli.real-escape-string.php - “mysqli_query（）”也是这样http://php.net/manual/en/mysqli.query.php - 你是否曾经检查错误http://php.net/manual/en/mysqli.error.php，将完全避免这个问题。 – 2015-02-24 16:46:05

^^^那就是你的答案^^^ – 2015-02-24 16:55:37

哦，亲爱的，你说得对，弗雷德。我没有插入适当的参数。非常感谢您向我指出 - 这可能是一个明显的疏忽，但我只是没有看到它。 – 2015-02-24 17:06:15