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无法将phpMyAdmin数据库连接到我的网站

Unable to connect phpMyAdmin database to my website

本文关键字：我的 网站 数据库连接 phpMyAdmin | 更新日期: 2024-02-14

我在使用PHP将在phpMyAdmin中创建的数据库连接到我的网页时遇到问题。我非常确信我的代码在html和php文件中都是正确的，我的DB和表名也是正确的，但当我尝试使用注册表时，它什么也没做。我使用的是jQuery mobile，所以我尝试过使用和不使用数据ajax="false"属性，但都无济于事。我在这里错过了什么？感谢您的回答：）我在下面包含了相关的html和php代码，这是我试图连接到DB的注册页面中的注册表单。

<!DOCTYPE html>
<html lang="en">
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1; minimum-scale=1;">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css">
  <link href="/projects/ibill_v3/css/mainstyles.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/register.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/login.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/home.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/record_session.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/viewsessions.css" rel="StyleSheet"/>
  <link href="/projects/ibill_v3/css/email.css" rel="StyleSheet"/>
  <script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
  <script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
  <script src="script.js"></script>
  <script type='text/javascript' src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.11.1/jquery.validate.min.js"></script>
  <script type='text/javascript'>
            $(document).on('pageinit', function(){
                $('#registerForm').validate({ // initialize the plugin
                    // rules & options
                });
            });  
  </script>
  <script type='text/javascript'>
            $(document).on('pageinit', function(){
                $('.loginform').validate({ // initialize the plugin
                    // rules & options
                });
            });  
  </script>
</head>
<body>
 <!--********************************REGISTER PAGE**********************************************-->
<!--****************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="register">
    <div data-role="header" data-id="foo1" data-position="fixed">
    <div class='cssmenu'>
      <ul>
         <li class='active'><a href='#home'>Home</a></li>
         <li><a href='#sessionrecord'>Record a Session</a></li>
         <li><a href='#viewsessions'>View Sessions</a></li>
         <li><a href='#email'>E-mail an Invoice</a></li>
      </ul>
    </div>
  </div>
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        <section class="registerform">
          <h1>The iBill Invoicing App for Activity Instructors</h1>
          <p>Register below</p>
              <form data-ajax="false" method="POST" action="register.php" >
                <ul>
                  <li>
                    <label for="username">Username</label>
                    <input type="text" name="username" id="username" class="required" minlength="5" placeholder="enter username (min-5 characters)">
                  </li>
                  <li>
                    <label for="firstname">Firstname</label>
                    <input type="text" name="firstname" id="firstname" class="required" minlength="5" placeholder="enter firstname">
                  </li>
                  <li>
                    <label for="username">Surname</label>
                    <input type="text" name="surname" id="surname" class="required" minlength="5" placeholder="enter surname">
                  </li>
                  <li> 
                    <label for="email">Email</label>
                    <input type="email" name="email" id="email" class="required email" placeholder="yourname@email.com">
                  </li>
                  <li> 
                    <label for="password">Password</label>
                    <input type="password" name="password" id="password" class="required" minlength="6" placeholder="enter password">
                  </li>
                  <li> 
                    <label for="confirmpassword">Confirm Password</label>
                    <input type="password" name="confirmpassword" id="confirmpassword" class="required" minlength="6" placeholder="re-enter password">
                  </li>
                <div id="registerbutton">
                      <input type="submit" value="Register">
                </div>
                </ul>
              </form>
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************REGISTER PAGE**********************************************-->
<!--****************************************************************************************-->
 
<!--********************************LOGIN PAGE**********************************************-->
<!--****************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="login">
    <div data-role="header" data-id="foo1" data-position="fixed">
    <div class='cssmenu'>
      <ul>
         <li class='active'><a href='#home'>Home</a></li>
         <li><a href='#sessionrecord'>Record a Session</a></li>
         <li><a href='#viewsessions'>View Sessions</a></li>
         <li><a href='#email'>E-mail an Invoice</a></li>
      </ul>
    </div>
  </div>
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        
        <section class="loginform">
              <form action="form.php" method="post"> 
                  <ul>
                    <li><label for="usermail">Email</label>
                      <input type="email" name="usermail" placeholder="yourname@email.com" class="required"></li>
                    <li><label for="password">Password</label>
                      <input type="password" name="password" placeholder="enter password"  minlength="6"></li>
                    <li>
                    <div id="loginbutton">
                      <input type="submit" value="Login"></li>
                    </div>
                    <div id="registerbutton">
                      <input type="submit" value="Register"></li>
                    </div>
                  </ul>
              </form>
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************LOGIN PAGE**********************************************-->
<!--****************************************************************************************-->
<!--********************************HOME PAGE**********************************************-->
<!--***************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="home">
    <div data-role="header" data-id="foo1" data-position="fixed">
  		<div class='cssmenu'>
  			<ul>
  			   <li class='active'><a href='#home'>Home</a></li>
           <li><a href='#sessionrecord'>Record a Session</a></li>
           <li><a href='#viewsessions'>View Sessions</a></li>
           <li><a href='#email'>E-mail an Invoice</a></li>
  			</ul>
  		</div>
    </div><!-- /header -->
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        
        <section class="maincontent">
                <h1>The iBill Invoicing App for Activity Instructors</h1>
                  <p>iBill is a cross-platform app that allows you track and manage activity sessions on the go.</p>
                  <br> 
                  <p>Record an activity session to get started!</p>
                <div style="text-align:center">
                  <a href="#sessionrecord" class="ui-btn ui-btn-inline ui-mini ui-corner-all ui-shadow">Record a Session</a>
                </div>
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************FOOTER**********************************************-->
<!--********************************HOME PAGE**********************************************-->
<!--***************************************************************************************-->
<!--********************************RECORD SESSION PAGE************************************-->
<!--***************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="sessionrecord">
    <div data-role="header" data-id="foo1" data-position="fixed">
    <div class='cssmenu'>
      <ul>
        <li class='active'><a href='#home'>Home</a></li>
        <li><a href='#sessionrecord'>Record a Session</a></li>
        <li><a href='#viewsessions'>View Sessions</a></li>
        <li><a href='#email'>E-mail an Invoice</a></li>
      </ul>
    </div>
  </div><!-- /header -->
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        
        <section class="maincontent">
          <h1>Record a session using the form below</h1>
            <form method="post" action="" id="sessionRecord">
              <fieldset>
                  <select name="typeofactivity" id="typeofactivity" data-native-menu="false">
                    <option>Type of Session</option>
                    <option value="surf">Surf</option>
                    <option value="coast">Coasteer</option>
                    <option value="bodyboard">Bodyboard</option>
                    <option value="climbing">Cornish Challenge</option>
                  </select>
              </fieldset>
              <fieldset>
                  <select name="employer" id="employer" data-native-menu="false">
                    <option>Employer</option>
                    <option value="nac">Newquay Activity Centre</option>
                    <option value="coastline">Coastline Coasteer</option>
                  </select>
              </fieldset>
              <form method="post" action="PHP HERE!">
                  <label for="datetime">Date and Time of Session</label>
                  <input type="datetime-local" data-clear-btn="false" name="datetime" id="datetime" value="">
              </form>
              <form method="post" action="PHP HERE!">
                  <label for="amount">Amount (GBP)</label>
                  <input type="number" data-clear-btn="true" name="amount" id="amount" value="">
              </form>
                <div id="submitbutton">
                  <input type="submit" value="Submit">
                </div>
            </form>
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************FOOTER**********************************************-->
<!--********************************RECORD SESSION PAGE************************************-->
<!--***************************************************************************************-->
<!--********************************VIEW SESSIONS PAGE************************************-->
<!--***************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="viewsessions">
    <div data-role="header" data-id="foo1" data-position="fixed">
    <div class='cssmenu'>
      <ul>
         <li class='active'><a href='#home'>Home</a></li>
         <li><a href='#sessionrecord'>Record a Session</a></li>
         <li><a href='#viewsessions'>View Sessions</a></li>
         <li><a href='#email'>E-mail an Invoice</a></li>
      </ul>
    </div>
  </div><!-- /header -->
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        
        <section class="maincontent">
                <!--MAIN CONTENT GOES HERE-->
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************FOOTER**********************************************-->
<!--********************************VIEW SESSIONS PAGE************************************-->
<!--***************************************************************************************-->
<!--********************************EMAIL AN INVOICE PAGE************************************-->
<!--***************************************************************************************-->
<!--********************************HEADER**********************************************-->
<div data-role="page" id="email">
    <div data-role="header" data-id="foo1" data-position="fixed">
    <div class='cssmenu'>
      <ul>
         <li class='active'><a href='#home'>Home</a></li>
         <li><a href='#sessionrecord'>Record a Session</a></li>
         <li><a href='#viewsessions'>View Sessions</a></li>
         <li><a href='#email'>E-mail an Invoice</a></li>
      </ul>
    </div>
  </div><!-- /header -->
<!--********************************HEADER**********************************************-->
<!--********************************MAIN**********************************************-->
  <div data-role="main" class="ui-content">
    
    <img class="mainlogo" src="/projects/ibill_v3/img/ibill logo.png" alt="iBill Logo" width="250" height="190">
        
        <section class="maincontent">
                <!--MAIN CONTENT GOES HERE-->
        </section>
  </div>
<!--********************************MAIN**********************************************-->
<!--********************************FOOTER**********************************************-->
  <div data-role="footer">
    <footer class="footer">
        <p>awilliams&copy;</p>
    </footer>
  </div>
</div>
<!--********************************FOOTER**********************************************-->
<!--********************************EMAIL AN INVOICE PAGE************************************-->
<!--***************************************************************************************-->
</body>

<?php
$servername = "localhost";
$username = "root";
$password = "cornwall";
$con=mysqli_connect('localhost','root','cornwall','ibill');
// This code creates a connec'tion to the MySQL database in PHPMyAdmin named 'ibill':
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
// The connection is then checked, if it fails, an echo is sent back to the page stating a connection error.
$username =  $_POST['username'];
$firstname =  $_POST['firstname'];
$surname =  $_POST['surname'];
$emailaddress =  $_POST['emailaddress'];
$password =  $_POST['password'];
$confirmpassword =  $_POST['confirmpassword'];
//These are the different PHP variables that store my posted data.
$register="INSERT INTO user_details (username, firstname, surname, emailaddress, password,) VALUES ('$username', '$firstname', '$surname', '$emailaddress', '$password')";
echo $register;
$result=mysqli_query($con, $register);
//This is the query that will be sent to the MySQL server.
header('Location: http://localhost/projects/ibill_v3/html/main.html#login');
exit();
//This directs the user to the relevant page after successful registration.
?>

首先，阅读这篇关于SQL注入的文章：如何在PHP中防止SQL注入？。

SQL查询中存在错误。在您的PHP文件中，替换此行：

$result=mysqli_query($con, $register);

这个：

if(mysqli_query($con,$register) === FALSE){
    echo mysqli_error($con);
}

要显示PHP代码中的错误，请添加以下行：

/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);

参考：如何显示PHP错误？

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