我无法使用PHP将我在phpMyAdmin中创建的数据库连接到我的网页。我很确定我的代码在html和php文件中是正确的，我的数据库和表名是正确的，但是当我尝试使用注册表时，它什么都不做。我正在使用jQuery mobile，所以尝试使用和不使用 data-ajax =＆＃34; false＆＃34; 属性都无济于事。我在这里失踪了什么？谢谢你的答案:)我已经在下面包含了相关的html和php代码，它是我试图连接到数据库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©</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©</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©</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©</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©</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©</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.
?>
答案 0 :(得分：0)
首先，阅读有关SQL注入的文章：How can I prevent SQL injection in PHP?。
SQL查询中存在错误。在PHP文件中，替换以下行：
$result=mysqli_query($con, $register);
用这个：
if(mysqli_query($con,$register) === FALSE){
echo mysqli_error($con);
}
要在PHP代码中显示错误，请添加以下行：
/** Error reporting */
error_reporting(E_ALL);
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);