我用PHP编写了一个类,用于发送使用Gmail帐户的邮件.该类又使用PHPMailer库.该设置是Windows Vista上的WAMP 2.4.使用PHP中的microtime()函数,我发现发送一封邮件需要5到6秒.在这种设置上运行的PHP脚本是否正常,我需要花费5-6秒才能发送一封邮件.这是该类的代码.

<?php

require_once("phpmailer/class.phpmailer.php");
require_once("phpmailer/class.smtp.php");

class Mailer {

    // Needs to be set per object
    public $subject;
    public $message;
    public $to_name;
    public $to;

    private $mail; // This is the main mail object that'll be initialized 

    public function __construct() {

        // Need to create a PHPMailer object in the constuctor and return it for use in this class. 

        $mail = new PHPMailer();

        $from_name = "bleh";
        $from = "bleh@gmail.com";
        $username = "bleh";
        $password = "bleh";

        $mail->FromName = $from_name;
        $mail->From = $from;
        $mail->Username = $username;
        $mail->Password = $password;

        $mail->IsSMTP();
        $mail->Host = "smtp.gmail.com";
        // $mail->Port = 587; // Turns out, I dont need this one. 
        $mail->SMTPAuth = true; // gmail requires this
        $mail->SMTPSecure = 'tls'; // gmail requires this

        $this->mail = $mail;


    }


    function send() {

        $mail = $this->mail; // The mail object 

        $mail->Subject = $this->subject;
        $mail->Body = $this->message;
        $mail->AddAddress($this->to, $this->to_name);

        $result = $mail->Send();
        return $result;

    }
}
?>

用于测试此代码的代码 –

$startTime = microtime(true);
require_once("mailer.php");

$mailer = new Mailer();

$mailer->subject = "Test";
$mailer->message = "Test";
$mailer->to_name = "My Name";
$mailer->to = "anemail@address";

$mailer->send();
echo "Time:  " . number_format(( microtime(true) - $startTime), 4) . " Seconds\n";

解决方法:

SMTP很常见 – 它甚至被用作greetdelay/tarpit mechanisms形式的反垃圾邮件措施.RFC2821 section 4.5.3.2允许在流量开始前最多延迟5分钟. SMTP不适合交互式使用(因为它不能在这种情况下排队),并且在网页提交期间通过SMTP发送可能会因此而受到影响.通过异步过程发送邮件或SMTP可以避免此问题.

在PHPMailer中,您可以启用SMTP调试输出,它将显示正在发生的事情,这样您就可以看到花费时间的内容：

$mail->SMTPDebug = 2;