使用php通过socket进行发信源码，支持发信认证

1.<? 
2./******************************************/ 
3./*          Php webmail sender            */ 
4./*           www.ebugs.org                */ 
5./* Copyright 富翁 in im286.com 2005.03.07 */ 
6./*           转载请注明出处               */ 
7./******************************************/ 
8.  
9.//使用前请首先按照提示进行配置发信认证的用户名、密码以及smtp服务器地址、发件人信箱等。 
10.//注意将#替换成#，落伍(www.im286.com）负翁版权所有，可随意使用，但保留版权信息 
11.  
12.//例子 
13.echo send_mail('fuweng#im286.com','发信标题','发信内容'); 
14.  
15.  
16.function send_mail($to, $subject = 'No subject', $body) { 
17.        $loc_host = "im286";            //发信计算机名，可随意 
18.        $smtp_acc = "fuweng#im286.com"; //Smtp认证的用户名，类似fuweng@im286.com，或者fuweng 
19.        $smtp_pass="password";          //Smtp认证的密码，一般等同pop3密码 
20.        $smtp_host="smtp.im286.com";    //SMTP服务器地址，类似 smtp.tom.com 
21.        $from="fuweng#im286.com";       //发信人Email地址，你的发信信箱地址 
22.    $headers = "Content-Type: text/plain; charset=\"gb2312\"\r\nContent-Transfer-Encoding: base64"; 
23.    $lb="\r\n";                    //linebreak 
24.             
25.        $hdr = explode($lb,$headers);     //解析后的hdr 
26.    if($body) {$bdy = preg_replace("/^\./","..",explode($lb,$body));}//解析后的Body 
27.  
28.        $smtp = array( 
29.                //1、EHLO，期待返回220或者250 
30.                array("EHLO ".$loc_host.$lb,"220,250","HELO error: "), 
31.                //2、发送Auth Login，期待返回334 
32.                array("AUTH LOGIN".$lb,"334","AUTH error:"), 
33.                //3、发送经过Base64编码的用户名，期待返回334 
34.                array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "), 
35.                //4、发送经过Base64编码的密码，期待返回235 
36.                array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : ")); 
37.        //5、发送Mail From，期待返回250 
38.        $smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: "); 
39.        //6、发送Rcpt To。期待返回250 
40.        $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: "); 
41.        //7、发送DATA，期待返回354 
42.        $smtp[] = array("DATA".$lb,"354","DATA error: "); 
43.        //8.0、发送From 
44.        $smtp[] = array("From: ".$from.$lb,"",""); 
45.        //8.2、发送To 
46.        $smtp[] = array("To: ".$to.$lb,"",""); 
47.        //8.1、发送标题 
48.        $smtp[] = array("Subject: ".$subject.$lb,"",""); 
49.        //8.3、发送其他Header内容 
50.        foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");} 
51.        //8.4、发送一个空行，结束Header发送 
52.        $smtp[] = array($lb,"",""); 
53.        //8.5、发送信件主体 
54.        if($bdy) {foreach($bdy as $b) {$smtp[] = array(base64_encode($b.$lb).$lb,"","");}} 
55.        //9、发送“.”表示信件结束，期待返回250 
56.        $smtp[] = array(".".$lb,"250","DATA(end)error: "); 
57.        //10、发送Quit，退出，期待返回221 
58.        $smtp[] = array("QUIT".$lb,"221","QUIT error: "); 
59.  
60.        //打开smtp服务器端口 
61.        $fp = @fsockopen($smtp_host, 25); 
62.        if (!$fp) echo "<b>Error:</b> Cannot conect to ".$smtp_host."<br>"; 
63.        while($result = @fgets($fp, 1024)){if(substr($result,3,1) == " ") { break; }} 
64.         
65.        $result_str=""; 
66.        //发送smtp数组中的命令/数据 
67.        foreach($smtp as $req){ 
68.                //发送信息 
69.                @fputs($fp, $req[0]); 
70.                //如果需要接收服务器返回信息，则 
71.                if($req[1]){ 
72.                        //接收信息 
73.                        while($result = @fgets($fp, 1024)){ 
74.                                if(substr($result,3,1) == " ") { break; } 
75.                        }; 
76.                        if (!strstr($req[1],substr($result,0,3))){ 
77.                                $result_str.=$req[2].$result."<br>"; 
78.                        } 
79.                } 
80.        } 
81.        //关闭连接 
82.        @fclose($fp); 
83.        return $result_str; 
84.} 
85.?>