可能重复：PHP：“注意：未定义的变量”和“通知：未定义的索引”
我的PHP代码突然提出：
注意：未定义的索引：在第36行的C：\ xampp \ htdocs \ globalautoparts \ register.php中提交
注意：未定义的索引：第40行的C：\ xampp \ htdocs \ globalautoparts \ register.php中的fullname
注意：未定义的索引：第41行的C：\ xampp \ htdocs \ globalautoparts \ register.php中的用户名
注意：未定义的索引：第42行的C：\ xampp \ htdocs \ globalautoparts \ register.php中的密码
注意：未定义的索引：第43行的C：\ xampp \ htdocs \ globalautoparts \ register.php中的repeatpassword
注意：未定义的索引：第45行的C：\ xampp \ htdocs \ globalautoparts \ register.php中的电子邮件
在注册页面上 .
我如何解决它？
这是我的代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="author" content="Luka Cvrk (solucija.com)" />
<meta name="keywords" content="conceptnova, concept, framework, web, content, corporate, business" />
<meta name="description" content="Conceptnova" />
<link rel="stylesheet" href="css/main.css" type="text/css" media="screen, projection" />
<title>Global Autoparts | Home</title>
</head>
<body>
<div id="wrap">
<div id="header_top">
<h1 id="logo"><a href="#" title="Conceptnova"><img src="images/logo.gif" align="left" /></a></h1>
<h1 id="logo"></h1>
<ul>
<li><a href="index.php">home</a></li>
<li><a href="aboutus.php">about us</a></li>
<li><a href="services.php">services</a></li>
<li><a href="portfolio.php">portfolio</a></li>
<li><a href="contact.php">contact</a></li>
</ul>
<div id="slogan">
<p></p>
</div>
</div>
<div id="header_bottom">
<h2>Think outside of the box!</h2>
<p>Registering with Global Auto Parts means you have access to super-fast online orders and total user customization, so you wont have to wait in a line again!</p>
</div>
<div id="maincontent">
<div id="left">
<h2><a href="#">Register to become apart of the global community!</a></h2>
<p><?php
echo "<h1>Registration Page.</h1>";
$submit = $_POST['submit'];
//form data
$fullname = strip_tags($_POST['fullname']);
$username = strtolower(strip_tags($_POST['username']));
$password = strip_tags($_POST['password']);
$repeatpassword = strip_tags($_POST['repeatpassword']);
$date = date("Y-m-d");
$email = $_POST['email'];
if ($submit)
{
//open database
$connect = mysql_connect("localhost","root","");
mysql_select_db("phplogin"); //select database
$namecheck = mysql_query("SELECT username FROM users WHERE username='$username'");
$count = mysql_num_rows($namecheck);
if ($count!=0)
{
die("Username already taken! Go <a href='register.php'>back</a> to try again?");
}
// check for existence
if($fullname&&$username&&$password&&$repeatpassword)
{
if ($password==$repeatpassword)
{
//check char length of username and fullname
if (strlen($username)>25||strlen($fullname)>25)
{
echo "Length of username or fullname is too long!";
}
else{
//check password length
if (strlen($password)>25||strlen($password)<6)
{
echo "Password must be between 6 and 25 characters";
}
else{
//register the user!
// encrypt password
$password = md5($password);
$repeatpassword = md5($repeatpassword);
//generate random number for activation process
$random = rand(23456789,98765432);
$queryreg = mysql_query("
INSERT INTO users VALUES ('','$fullname','$username','$password','$email','$date','$random','0')
");
$lastid = mysql_insert_id();
//send activation email
ini_set("SMTP",$server);
$to = $email;
$subject = "Activate your account!";
$headers = "From: Global Auto Parts";
$server = "localhost";
$body = "
Hello $fullname,\n\n
You need to activate your account with the link below:
http://localhost/globalautoparts/activate.php?=$lastid&code=$random \n\n
Thanks.
";
//function to send mail
mail($to, $subject, $body, $headers);
die("You have been registered! Check your email to activate your account!");
}
}
}
else
echo "Your passwords do not match!";
}
else
echo "Please fill in <b>all</a> fields!";
}
?>
<html>
<p>
<form action='register.php' method='POST'>
<table>
<tr>
<td>
Your full name:
</td>
<td>
<input type='text' name='fullname' value='<?php echo $fullname; ?>'>
</td>
</tr>
<tr>
<td>
Choose a username:
</td>
<td>
<input type='text' name='username' value='<?php echo $username; ?>'>
</td>
</tr>
<tr>
<td>
Choose a password:
</td>
<td>
<input type='password' name='password'>
</td>
</tr>
<tr>
<td>
Repeat your password:
</td>
<td>
<input type='password' name='repeatpassword'>
</td>
</tr>
<tr>
<td>
Email:
</td>
<td>
<input type='text' name='email'>
</td>
</tr>
</table>
<p>
<input type='submit' name='submit' value='Register'>
</form>
</p>
</div>
<div id="right">
<div id="searchform">
<form method="post" action="#">
<p><input type="text" name="search" class="search" value="Search Keywords" /><input type="submit" value="GO" class="submit" /></p>
</form>
</div>
<p>
<html>
<form action='login.php' method='POST'>
Username: <input type='text' name='username'>
Password: <input type='password' name='password'>
Click <a href='register.php'>here</a> to register. <input type='Submit' value='Login' id="login">
</form> <p>
</p>
</div>
</div>
<div id="footer">
<p>© Copyright 2011 <a href="#">Global Autoparts</a> Design: Victor Gatto </p>
</div>
</div>
</body>
</html>
<!--REGBOX-->
4 回答
正如其他人建议的那样，你可以
Change the Error Reporting Level
通过在脚本顶部运行此代码：
error_reporting(E_ALL ^ E_NOTICE)或者，在使用它们之前实际检查这些变量是否已发布可能是更好的主意 .
Quick and Dirty fix is to do this:
@符号将禁止任何错误并返回false代替字符串 . 现在这种做法一般都不受欢迎 .
If you want a cleaner method, I would do this:
然后，您永远不会有关于缺少索引的错误，您可以将默认值设置为您喜欢的任何值 .
祝好运
有人已经提升了您的服务器/应用程序上的错误报告，以包含
E_NOTICE错误 .您可以使用禁用此功能
或者在使用之前检查数组索引来改进应用程序
好吧，这些可能总是已生成，但您的错误报告设置可能已更改为最近包含通知 . PHP只是通知您're setting a variable equal to another variable that isn't已定义 . 当
$_POST['submit']尚未填充时，当您尝试使用它时，您将收到来自PHP的通知错误 . 您可以在尝试使用它们之前检查这些变量是否已设置，或者只是告诉PHP不要向您显示通知错误：你应该为if（$ submit）块之外的表单数据设置默认值，并在if块中获取表单数据，以避免严格php环境中的错误/通知 .