我之前已经问过这个问题，但我似乎从未了解它是如何工作的（我尝试了很多但根本没有成功）有人可以告诉我如何在注册时向用户电子邮件地址发送激活链接并且不允许用户，直到他们通过点击电子邮件地址中的链接激活他们的帐户？我该怎么办？完全看不懂。。。求大神帮忙。。。
我users在数据库表中的内容：
1 id int(11) AUTO_INCREMENT
2 username varchar(255)
3 password char(64)
4 salt char(16)
5 email varchar(255)
注册.php
// First we execute our common code to connection to the database and start the session
require("common.php");
// This if statement checks to determine whether the registration form has been submitted
// If it has, then the registration code is run, otherwise the form is displayed
if(!empty($_POST))
{
// Ensure that the user has entered a non-empty username
if(empty($_POST['username']))
{
echo "Please enter a username.";
}
// Ensure that the user has entered a non-empty password
if(empty($_POST['password']))
{
die("Please enter a password.");
}
// Make sure the user entered a valid E-Mail address
// filter_var is a useful PHP function for validating form input, see:
if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL))
{
die("Invalid E-Mail Address");
}
$query = "
SELECT
1
FROM users
WHERE
username = :username
";
$query_params = array(
':username' => $_POST['username']
);
try
{
// These two statements run the query against your database table.
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
// Note: On a production website, you should not output $ex->getMessage().
// It may provide an attacker with helpful information about your code.
die("Failed to run query: " . $ex->getMessage());
}
$row = $stmt->fetch();
if($row)
{
die("This username is already in use");
}
// Now we perform the same type of check for the email address, in order
// to ensure that it is unique.
$query = "
SELECT
1
FROM users
WHERE
email = :email
";
$query_params = array(
':email' => $_POST['email']
);
try
{
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
die("Failed to run query: " . $ex->getMessage());
}
$row = $stmt->fetch();
if($row)
{
die("This email address is already registered");
}
// An INSERT query is used to add new rows to a database table.
// Again, we are using special tokens (technically called parameters) to
// protect against SQL injection attacks.
$query = "
INSERT INTO users (
username,
password,
salt,
email
) VALUES (
:username,
:password,
:salt,
:email
)
";
$to = "email";
$subject = "Your Account Information!";
$body = <<<EMAIL
Hello {'email'}, here is your account information!
Username:{'username'}
Password:{'password'}
Please activate your account by clicking the following activation link:
http://www.mywebsite.com/activate.php?aid={$aid}
EMAIL;
$headers = 'From: noreply@yourdomain.com' . "\r\n" .
'Reply-To: noreply@yourdomain.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();
if(mail($to, $subject, $body, $headers)){
echo("<p>Your account information was successfully sent to your email - ('email')! <br><br>Please open your email and click the activation link to activate your account.</p><br><p>If you do not see your account information in your inbox within 60 seconds please check your spam/junk folder.</p>");
} else {
echo("<p> Unfortunately, your account information was <u>unsuccessfully</u> sent to your email - ('email'). </p>");
}
$salt = dechex(mt_rand(0, 2147483647)) . dechex(mt_rand(0, 2147483647));
$password = hash('sha256', $_POST['password'] . $salt);
for($round = 0; $round < 65536; $round++)
{
$password = hash('sha256', $password . $salt);
}
$query_params = array(
':username' => $_POST['username'],
':password' => $password,
':salt' => $salt,
':email' => $_POST['email']
);
try
{
// Execute the query to create the user
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
}
header("Location: login.php");
die("Redirecting to login.php");
}
?>
<h1>Register</h1>
<form action="" method="post">
Username:<br />
<input type="text" name="username" required value="" />
<br /><br />
E-Mail:<br />
<input type="text" name="email" required value="" />
<br /><br />
Password:<br />
<input type="password" required name="password" value="" />
<br /><br />
<input type="submit" value="Register" />
</form>
登录.php
<?php
// First we execute our common code to connection to the database and start the session
require("common.php");
$submitted_username = '';
if(!empty($_POST))
{
$query = "
SELECT
id,
username,
password,
salt,
email
FROM users
WHERE
username = :username
";
// The parameter values
$query_params = array(
':username' => $_POST['username']
);
try
{
// Execute the query against the database
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
die("Failed to run query: " . $ex->getMessage());
}
$login_ok = false;
$row = $stmt->fetch();
if($row)
{
$check_password = hash('sha256', $_POST['password'] . $row['salt']);
for($round = 0; $round < 65536; $round++)
{
$check_password = hash('sha256', $check_password . $row['salt']);
}
if($check_password === $row['password'])
{
$login_ok = true;
}
}
if($login_ok)
{
unset($row['salt']);
unset($row['password']);
$_SESSION['user'] = $row;
// Redirect the user to the private members-only page.
header("Location: private.php");
die("Redirecting to: private.php");
}
else
{
// Tell the user they failed
print("The Username/Password is invalid.");
$submitted_username = htmlentities($_POST['username'], ENT_QUOTES, 'UTF-8');
}
}
?>
<h1>Login</h1>
<form action="login.php" method="post">
Username:<br />
<input type="text" name="username" required value="<?php echo $submitted_username; ?>" />
<br /><br />
Password:<br />
<input type="password" name="password" value="" required />
<br /><br />
<input type="submit" value="Login" />
</form>
<a href="register.php">Register</a>