php 检测邮箱

<?php
function validateEmail($email) {
    if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
        return true;
    } else {
        return false;
    }
}

$email = "example@example.com";
if (validateEmail($email)) {
    echo "邮箱格式正确";
} else {
    echo "邮箱格式不正确";
}
?>

<?php
function sendVerificationEmail($email, $verificationCode) {
    $subject = "邮箱验证";
    $message = "请点击以下链接验证您的邮箱：http://yourdomain.com/verify.php?code=" . $verificationCode;
    $headers = "From: no-reply@yourdomain.com";

    if (mail($email, $subject, $message, $headers)) {
        return true;
    } else {
        return false;
    }
}

$email = "example@example.com";
$verificationCode = md5(uniqid(mt_rand(), true)); // 生成一个唯一的验证码
if (sendVerificationEmail($email, $verificationCode)) {
    echo "验证邮件已发送";
} else {
    echo "发送邮件失败";
}
?>