PHP非同步協程開發：最佳化郵件發送的速度與穩定性

use SwooleCoroutine;
use SwooleCoroutineChannel;
use PHPMailerPHPMailerPHPMailer;

function sendMail($to, $subject, $body)
{
    go(function () use ($to, $subject, $body) {
        $mail = new PHPMailer;
        $mail->isSMTP();
        $mail->Host = 'smtp.example.com';
        $mail->SMTPAuth = true;
        $mail->Username = 'username';
        $mail->Password = 'password';
        $mail->SMTPSecure = 'tls';
        $mail->Port = 587;
        $mail->setFrom('from@example.com');
        $mail->addAddress($to);
        $mail->Subject = $subject;
        $mail->Body = $body;

        if ($mail->send()) {
            echo "发送成功
";
        } else {
            echo "发送失败：" . $mail->ErrorInfo . "
";
        }
    });
}

$channel = new Channel();

go(function () use ($channel) {
    for ($i = 1; $i <= 100; $i++) {
        $channel->push(["to@example.com", "测试邮件{$i}", "这是一封测试邮件"]);
    }
    $channel->close();
});

go(function () use ($channel) {
    while ($data = $channel->pop()) {
        sendMail($data[0], $data[1], $data[2]);
    }
});

Coroutine::create(function () {
    Coroutine::sleep(1); // 等待所有邮件发送完成
    swoole_event_exit(); // 退出事件循环
});