2016-05-25

php发送邮件

0. 概述

php manual中关于mail的介绍很简单，

@param to 电子邮件收件人或收件人列表
@param subjct 电子邮件的主题 也就是收件人或收件人列表
@param message 所要发送的消息 
@return true if the mail was successfully accepted fro delivery, FALSE otherwise
bool mail ( string $to , string $subject , string $message [, string $additional_headers [, string $additional_parameters ]] )

0. 我的代码

根据邮件协议，使用基本的php代码进行编写，直接包含这个类即可使用

1. 发送html

发送html就是将正文的message以文本格式发送
2. 发送附件

附件需要以multipart/form-data的格式进行组装，这儿与web上传form表单的格式一样。例子如下

--==Mime_Multipart_Boundary_x69c8f8864502559be8e17a0cb379ff0cx
Content-Transfer-Encoding: base64

54eV5YevQm9keQoKCgo=

--==Mime_Multipart_Boundary_x69c8f8864502559be8e17a0cb379ff0cx
X-Attachment-Id: 15259
Content-Transfer-Encoding: base64
Content-Type: application/octet-stream; name="keything.txt"
Content-Disposition: attachment; filename="keything.txt"

54eV5Yev

--==Mime_Multipart_Boundary_x69c8f8864502559be8e17a0cb379ff0cx--

我们所发出的数据就如上面文本所示，因此要将其组装

class KTMail

<?php
class KTMail
{
    const UTF8_PREFIX  = '=?UTF-8?B?';
    const UTF8_POSTFIX = '?=';
    const RN = "\r\n";
    /**
     * @param from: who send this mail
     * @param to: who receive this mail
     * @param subject: the title of mail
     * @param body: the content of mail
     * @param attachment_fname: the file name of attachement
     * @param attachment_fdata: the file content of attachment
     * @return true if send succeed, FALSE otherwise
     * TODO if attachment_fname is chinese, it will be messay code.
     */
    public static function sendWithAttach($from, $to, $subject, $body, $attachment_fname, $attachment_fdata)
    {
        // a random string 
        $semi_rand = md5(time()); 
        $mime_boundary = '==Mime_Multipart_Boundary_x' . $semi_rand . 'x';
        $part_boundary = '==Part_Multipart_Boundary_x' . $semi_rand . 'x';

        // header 
        $headers = [];
        $headers[] = 'MIME-Version: 1.0';
        $headers[] = 'Content-Type: multipart/mixed; boundary=' . $mime_boundary;
        $headers[] = 'From: ' . $from;
        $headers_raw = implode(self::RN, $headers);

        // Message Body
        $msg = [];
        $msg[] = '--' . $mime_boundary;
        $msg[] = 'Content-Transfer-Encoding: base64' . self::RN;
        $msg[] =  chunk_split(base64_encode($body));

        // Attachment
        $msg[] = '--' . $mime_boundary;
        $msg[] = 'X-Attachment-Id: ' . rand(1000, 99999);
        $msg[] = 'Content-Transfer-Encoding: base64';
        $msg[] = 'Content-Type: application/octet-stream;' . ' name="' . $attachment_fname . '"';
        $msg[] = 'Content-Disposition: attachment; filename="'. $attachment_fname . '"' . self::RN;
        $msg[] = chunk_split(base64_encode($attachment_fdata));
        $msg[] = '--' . $mime_boundary . '--';

        $msg_raw = implode(self::RN, $msg);
        error_log($msg_raw, 3, '/tmp/sendmail.log');

        $real_subject = self::UTF8_PREFIX . base64_encode($subject) . self::UTF8_POSTFIX;

        return mail($to, $real_subject, $msg_raw, $headers_raw);
    }
    public static function sendWithHtml($from, $to, $subject, $body)
    {
        // header 
        $headers = array();
        $headers[] = 'MIME-Version: 1.0';
        $headers[] = 'Content-type: text/html; charset=utf-8';
        $headers[] = 'From: ' . $from;
        $headers_raw = implode(self::RN, $headers);

        // Message Body
        $real_subject = self::UTF8_PREFIX . base64_encode($subject) . self::UTF8_POSTFIX;
        $msg_raw = $body;

        return mail($to, $real_subject, $msg_raw, $headers_raw);
    }
}

测试用例

<?php
include ('ktmail.php');
$from = 'local@a.cn';
$to = 'your-email';
$subject = 'keything.net';
$body = 'keything.net';
$attachment_fname = 'keything.txt';
$attachment_fdata = 'keything';
$attach_res = KTMail::sendWithAttach($from, $to, $subject, $body, $attachment_fname, $attachment_fdata);
echo 'attach_res = ' . var_export($attach_res, true)."\n";

$html_body = '
    <html>
        <head> keything </head>
        <body> 
            keything body 
            <table border="1">
                <tr>
                    <td>row 1, cell 1</td>
                    <td>row 1, cell 2</td>
                </tr>
                <tr>
                    <td>row 2, cell 1</td>
                    <td>row 2, cell 2</td>
                </tr>
            </table>
        </body>
        </head>
    </html>
    ';
$html_res = KTMail::sendWithHtml($from, $to, $subject, $html_body);
echo 'html_res = ' . var_export($html_res, true)."\n";

0. 概述

0. 我的代码

1. 发送html

2. 发送附件