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我有一个积分系统是有一个测验。当他们点击提交测验时，我想让他们在mysql中获得+1分。我有一个名为登录和表用户的数据库，并且在用户希望点数在参加测验时更新为1+。 为quiz_form代码我使用：Mysql更新与PHP
:<!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>Registration Form</title>
</head>
<body>
<table width="328" border="0" align="center">
<form id="form1" name="form1" method="post" action="script.php">
<tr>
<td colspan="2"><h2 style="color:#FF0000">Quiz1</h2></td>
</tr>
<tr>
<td>UserName:</td>
<td>
<input name="txtusername" type="text" id="txtusername" value="<?php
session_start();
if ($_SESSION['username'])
{
echo "".$_SESSION['username'];
}
else
header ("location: welcome1.html");
?>
" />
</td>
</tr>
<tr>
<td>Who is Obama?</td>
<td><input type="password" name="txtPassword" id="txtPassword" /></td>
</tr>
<tr>
<td>What was the bing thing that were going to happend in 2012?</td>
<td><input type="text" name="txtemail" id="txtemail" /></td>
</tr>
<tr>
<td>What is a farrari?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>What is a spoon used for?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>Witch letter does this url start with?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>Are COD a game?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" name="btnRegister" id="btnRegister" value="submit" />
</td>
</tr>
</form>
</table>
<table width="328" border="0" align="center">
<form id="form1" name="form1" method="post" action="script2.php">
<tr>
<td colspan="2"><h2 style="color:#FF0000">Quiz2</h2></td>
</tr>
<tr>
<td>UserName:</td>
<td>
<input name="txtusername" type="text" id="txtusername" value="<?php
if ($_SESSION['username'])
{
echo "".$_SESSION['username'];
}
else
header ("location: welcome1.html");
?>
" />
</td>
</tr>
<tr>
<td>Who evented facebook?</td>
<td><input type="password" name="txtPassword" id="txtPassword" /></td>
</tr>
<tr>
<td>What is a cat?</td>
<td><input type="text" name="txtemail" id="txtemail" /></td>
</tr>
<tr>
<td>What is a lamborgini?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>What is goodel used for?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>What is the last letter in this url</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>Are Counter strik a game?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" name="btnRegister" id="btnRegister" value="submit" />
</td>
</tr>
</form>
</table>
<table width="328" border="0" align="center">
<form id="form1" name="form1" method="post" action="script3.php">
<tr>
<td colspan="2"><h2 style="color:#FF0000">Quiz3</h2></td>
</tr>
<tr>
<td>UserName:</td>
<td>
<input name="txtusername" type="text" id="txtusername" value="<?php
if ($_SESSION['username'])
{
echo "".$_SESSION['username'];
}
else
header ("location: welcome1.html");
?>
" />
</td>
</tr>
<tr>
<td>What is yourube used for?</td>
<td><input type="password" name="txtPassword" id="txtPassword" /></td>
</tr>
<tr>
<td>What is a dog?</td>
<td><input type="text" name="txtemail" id="txtemail" /></td>
</tr>
<tr>
<td>What is a kebab?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>Who is the most famed tenager in 2012/13?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>What is the 4th letter in this url?</td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td>100*2 - 5 +105 -55 +45= </td>
<td>
<input type="text" name="txtnummer" id="txtnummer" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" name="btnRegister" id="btnRegister" value="submit" />
</td>
</tr>
</form>
</table>
</body>
</html>
这里是剧本我使用的测验：
<?php
//=============Configuring Server and Database=======
$host = 'localhost';
$user = 'root';
$password = '';
//=============Data Base Information=================
$database = 'login';
$conn = mysql_connect($host,$user,$password) or die('Server Information is not Correct'); //Establish Connection with Server
mysql_select_db($database,$conn) or die('Database Information is not correct');
//===============End Server Configuration============
//=============Starting Registration Script==========
$username = mysql_real_escape_string($_POST['txtusername']);
//=============To Encrypt Password===================
//============New Variable of Password is Now with an Encrypted Value========
if(isset($_POST['btnRegister'])) //===When I will Set the Button to 1 or Press Button to register
{
$query = mysql_query("SELECT * FROM quiz WHERE username='$username'");
if(mysql_num_rows($query) > 0){
echo "Sorry but you can only take a quize once:S";
}else{
mysql_query ("insert into quiz(username)values('$username')");
$sql = "UPDATE users SET points = COALESCE(level,0)+1 WHERE username = $username";
header('location: succes.php');
}
}
?>
再次，这个工作很大。但我只需要让他们得到1分以上。所以，如果他们有10分和借此测验提交
有很多在这个问题上太多的东西。如果你不能将它降低到对问题重要的程度，那么你可能会问得太早，或者不太了解你的代码！ – markus
不要再使用古代的mysql_ *函数！他们不安全，效率低下。而是使用PDO或mysqli和准备好的语句！ – markus
现在的问题是：我需要什么代码才能让人们点击提交，然后再获得1点。更新代码 – carl