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用socket发送电子邮件（七）
b> 邮件发送处理
下面是真正的秘密了，可要看仔细了。:)
1 function send( $to,$from,$subject,$message)
2 {
3 //连接服务器
4 $this-$#@62;lastact="connect";
5 $this-$#@62;show_debug("connect to smtp server : ".$this-$#@62;smtp, "out");
6 $this-$#@62;fp = fsockopen ( $this-$#@62;smtp, $this-$#@62;port );
7 if ( $this-$#@62;fp )
8 {
9 set_socket_blocking( $this-$#@62;fp, true );
10 $this-$#@62;lastmessage=fgets($this-$#@62;fp,512);
11 $this-$#@62;show_debug($this-$#@62;lastmessage, "in");
12 if (! ereg ( "^220", $this-$#@62;lastmessage ) )
13 {
14 return false;
15 }
16 else
17 {
18 $this-$#@62;lastact="helo " . $this-$#@62;welcome . "\n";
19 if(!$this-$#@62;do_command($this-$#@62;lastact, "250"))
20 {
21 fclose($this-$#@62;fp);
22 return false;
23 }
24 $this-$#@62;lastact="mail from: $from" . "\n";
25 if(!$this-$#@62;do_command($this-$#@62;lastact, "250"))
26 {
27 fclose($this-$#@62;fp);
28 return false;
29 }
30 $this-$#@62;lastact="rcpt to: $to" . "\n";
31 if(!$this-$#@62;do_command($this-$#@62;lastact, "250"))
32 {
33 fclose($this-$#@62;fp);
34 return false;
35 }
36 //发送正文
37 $this-$#@62;lastact="data\n";
38 if(!$this-$#@62;do_command($this-$#@62;lastact, "354"))
39 {
40 fclose($this-$#@62;fp);
41 return false;
42 }
43 //处理subject头
44 $head="subject: $subject\n";
45 if(!empty($subject) && !ereg($head, $message))
46 {
47 $message = $head.$message;
48 }
49 //处理from头
50 $head="from: $from\n";
51 if(!empty($from) && !ereg($head, $message))
52 {
53 $message = $head.$message;
54 }
55 //处理to头
56 $head="to: $to\n";
57 if(!empty($to) && !ereg($head, $message))
58 {
59 $message = $head.$message;
60 } <
