php email验证

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

$email = "example@example.com";
if (validateEmail($email)) {
    echo "Email is valid.";
} else {
    echo "Email is not valid.";
}
?>

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

$email = "example@example.com";
if (validateEmail($email)) {
    echo "Email is valid.";
} else {
    echo "Email is not valid. Please check the format.";
}
?>

<?php
require 'vendor/autoload.php';

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

$mail = new PHPMailer(true);

try {
    // SMTP服务器配置
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your_email@example.com';
    $mail->Password = 'your_password';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

    // 发件人
    $mail->setFrom('from@example.com', 'Mailer');

    // 收件人
    $mail->addAddress('to@example.com');

    // 邮件内容
    $mail->isHTML(true);
    $mail->Subject = 'Email Verification';
    $mail->Body    = 'Please click the link to verify your email: <a href="https://example.com/verify?token=12345">Verify Email</a>';

    $mail->send();
    echo 'Message has been sent';
} catch (Exception $e) {
    echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}
?>