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我正在嘗試使用驗證構建一個簡單的註冊表單。當我離開字段空白，並提交我的表單時，我不斷收到此錯誤未定義的索引電子郵件或未定義的索引密碼。例如，我填寫除姓氏以外的所有字段我會得到一個通知說，電子郵件是未定義的，如果我填寫所有領域，我得到用戶名，電子郵件和密碼未定義。我GOOGLE了它，我可以得到的sugesstions是isset，我嘗試使用isset但它仍然無法正常工作。任何人都可以幫忙嗎？未定義的驗證索引
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Sign Up</title>
<style>
label{
width:100px;
float:left;
}
</style>
</head>
<body>
<?php
session_start();
$Firstname=isset($_SESSION['Firstname']);
$Lastname=isset($_SESSION['Lastname']);
$username=isset($_SESSION['username']);
$email=isset($_SESSION['email']);
$password=isset($_SESSION['password']);
if(isset($_SESSION['error']))
{
echo '<p>'.$_SESSION['error']['Firstname'].'</p>';
echo '<p>'.$_SESSION['error']['Lastname'].'</p>';
echo '<p>'.$_SESSION['error']['username'].'</p>';
echo '<p>'.$_SESSION['error']['email'].'</p>';
echo '<p>'.$_SESSION['error']['password'].'</p>';
unset($_SESSION['error']);
}
?>
<div class="signup_form">
<form action="registerUser.php" method="post" >
<p>
<label for="Firstname">First Name:</label>
<input name="Firstname" type="text" id="Firstname" size="30"/>
</p>
<p>
<label for="Lastname">Last Name:</label>
<input name="Firstname" type="text" id="Lastname" size="30"/>
</p>
<p>
<label for="username">User Name:</label>
<input name="username" type="text" id="username" size="30"/>
</p>
<p>
<label for="email">E-mail:</label>
<input name="email" type="text" id="email" size="30"/>
</p>
<p>
<label for="password">Password:</label>
<input name="password" type="password" id="password" size="30 "/>
</p>
<p>
<input name="submit" type="submit" value="Submit"/>
</p>
</form>
</div>
<p><a href="login.php">Login</a></p>
</body>
</html>
這裏是registeruser.php
<?php
session_start();
include('dbconnect.php');
if(isset($_POST['submit']))
{
//whether the username is blank
if($_POST['FirstName'] == '')
{
$_SESSION['error']['Firstname'] = " FirstName is required.";
}
if($_POST['LastName'] == '')
{
$_SESSION['error']['Lastname'] = " LastName is required.";
}
//whether the email is blank
if($_POST['email'] == '')
{
$_SESSION['error']['email'] = "E-mail is required.";
}
else
{
//whether the email format is correct
if(preg_match("/^([a-zA-Z0-9])+([a-zA-Z0-9._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9._-]+)+$/", $_POST['email']))
{
//if it has the correct format whether the email has already exist
$email= $_POST['email'];
$personcon=$conn;
$sql1 = "SELECT * FROM TBLUSERS WHERE email = '$email'";
$personinfo=oci_parse($personcon,$sql1);
oci_execute($personinfo);
oci_free_statement($personinfo);
if (oci_num_rows($personinfo) > 0)
{
$_SESSION['error']['email'] = "This Email is already used.";
}
}
else
{
//this error will set if the email format is not correct
$_SESSION['error']['email'] = "Your email is not valid.";
}
}
//whether the password is blank
if($_POST['password'] == '')
{
$_SESSION['error']['password'] = "Password is required.";
}
if($_POST['username'] == '')
{
$_SESSION['error']['username'] = "username is required.";
}
if(isset($_SESSION['error']))
{
header("Location: index.php");
exit;
}
else
{
$FirstName = $_POST['FirstName'];
$LastName = $_POST['LastName'];
$email = $_POST['email'];
$username=$_POST['$username'];
$password = $_POST['password'];
$sql2 = "INSERT INTO TBLUSERS (FirstName,LastName,email, username,password) VALUES ('$FirstName', $LastName, '$email', '$username','$password')";
$personinfo2=oci_parse($personcon,$sql2);
oci_execute($personinfo2);
oci_free_statement($personinfo2);
if($personinfo2)
{
/* [email protected] */
$to = $email;
$subject = "Confirmation from TutsforWeb to $username";
$header = "TutsforWeb: Confirmation from TutsforWeb";
$message = "Please click the link below to verify and activate your account. rn";
$sentmail = mail($to,$subject,$message,$header);
if($sentmail)
{
echo "Your Confirmation link Has Been Sent To Your Email Address.";
}
else
{
echo "Cannot send Confirmation link to your e-mail address";
}
oci_close($personcon);
}
}
}
?>
我看到的第一件事就是名字有時名字和姓氏有時是姓氏。它可能不是唯一的問題，但只是略微區分大小寫。 –