PHP电子邮件验证链接的最简单方法

Question

我的网站上已有一个高级用户登录/注册系统(colemansystems.psm2.co.uk).但是,我希望向新用户发送电子邮件以验证其电子邮件地址.如果他们没有点击该链接,他们将无法访问他们的帐户.我对PHP和MySQL经验不足,所以请深入解释.

编辑:我用于verify.php文件的代码(用户点击GET的链接(例如verify.php?d=51773199320))

$secret = $_GET['d'];
$result = mysql_query("SELECT valid FROM users WHERE secret=$secret");
while ($row = mysql_fetch_array($result))
{
    $valid = $row['valid'];
}
if ($valid == "") {
    echo"There seems to be a problem with the verification code.<br><br><br><br><br>";
}
elseif ($valid == "1")
{
    echo"Your account is already verified.<br><br><br><br><br>";
}
else
{
    mysql_query("UPDATE users SET valid = '1' WHERE secret=$secret");  
    echo "Thank you, your account is now verified and you are free to use the exclusive features!<br><br><br><br><br><br>";
}

这样安全吗？

Answer 1

最简单的方法是根本不注册未经验证的用户.

向他们询问电子邮件地址并发送电子邮件,其中包含用哈希密封的地址的链接.收到此链接后,您可以开始注册过程.

像这样的东西

$secret = "35onoi2=-7#%g03kl";
$email = urlencode($_POST['email']);
$hash = MD5($_POST['email'].$secret);
$link = "http://example.com/register.php?email=$email&hash=$hash";

并在您register.php的注册表单中添加2个隐藏字段 - 电子邮件和哈希,从GET存储他们收到的值.

最后,流程注册和检查,

if (md5($_POST['email'].$secret) == $_POST['hash']) {
    //Continue registration.
}