1 <?php
 2 $array_values['host'] = "host";
 3 $array_values['port'] = 110;
 4 $array_values['user'] = 'user name';
 5 $array_values['password'] = 'Password';
 6 $array_values['checkmail'] = 'xxx@xxx.xxx';
 7  
 8 ganji_get_test_mail($array_values);
 9  
10 function ganji_get_test_mail($array_values)
11 {
12     $host = $array_values['host'];
13     $port = $array_values['port'];
14     $user = $array_values['user'];
15     $password = $array_values['password'];
16     $checkmail = $array_values['checkmail'];
17     $msg = '';
18     $return_msg = '';
19     // ini_set('memory_limit', '80M');
20     if (! ($sock = fsockopen(gethostbyname($host), $port, $errno, $errstr))) {
21         exit($errno . ': ' . $errstr);
22     }
23     
24     set_socket_blocking($sock, true);
25     
26     $command = "USER " . $user . "\r\n";
27     fwrite($sock, $command);
28     $msg = fgets($sock);
29     $command = "PASS " . $password . "\r\n";
30     fwrite($sock, $command);
31     $msg = fgets($sock);
32     
33     $command = "stat\r\n";
34     fwrite($sock, $command);
35     $return_msg = fgets($sock);
36     
37     $msg = fgets($sock);
38     
39     $command = "LIST\r\n";
40     fwrite($sock, $command);
41     $all_mails = array();
42     while (true) {
43         $msg = fgets($sock);
44         if (! preg_match('/^\+OK/', $msg) && ! preg_match('/^\./', $msg)) {
45             $msg = preg_replace('/\ .*\r\n/', '', $msg);
46             array_push($all_mails, $msg);
47         }
48         if (preg_match('/^\./', $msg))
49             break;
50     }
51     
52     // Get mailing list
53     $ganji_mails = array();
54     foreach ($all_mails as $item) {
55         fwrite($sock, "TOP $item 0\r\n");
56         while (true) {
57             $msg = fgets($sock);
58             // echo $msg . "<Br><Br>";
59             if (preg_match('/^\./', $msg)) {
60                 array_push($ganji_mails, $item);
61                 break;
62             }
63         }
64         continue;
65     }
66     
67     $mail_content = '';
68     $array_ganji_mails = array();
69     
70     //Traverse line by line
71     foreach ($ganji_mails as $item) {
72         fwrite($sock, "RETR $item\r\n");
73         while (true) {
74             $msg = fgets($sock);
75             $mail_content .= $msg;
76             if (preg_match('/^\./', $msg)) {
77                 array_push($array_ganji_mails, iconv_mime_decode_headers($mail_content, 0, "UTF-8"));
78                 $mail_content = '';
79                 break;
80             }
81         }
82     }
83     
84     // Get all information of the first email directly 9999 length
85     fwrite($sock, "RETR 1\r\n");
86     $mail_contents = fread($sock, 9999); // Get all directly
87     
88     echo "<br>";
89     var_dump($mail_contents);
90     echo "<br>";
91     
92     $command = "QUIT\r\n";
93     fwrite($sock, $command);
94     $msg = fgets($sock);
95     
96     return $mail_contents;
97 }

Introduction to common POP3 commands:

Command parameter status description

------------------------------------------

If USER username approves this command and the following pass command, it will lead to state transition

PASS password approval

APOP Name,Digest accept Digest as MD5 message Digest

------------------------------------------

STAT None processes statistics about the mailbox sent back by the requesting server, such as the total number of messages and total bytes

UIDL [Msg ×] processes the unique identifier of the returned message, and each identifier of the POP3 session will be unique

LIST [Msg ×] processes the number of returned messages and the size of each message

RETR [Msg]'s processing returns the entire text of the message identified by the parameter

The DELE [Msg ×] processing server marks messages identified by parameters as deleted and executes the quit command

RSET None processing server will reset all messages marked for deletion to undo the delete command

TOP [Msg]] the processing server will return the first n lines of the message identified by the parameter. N must be a positive integer

NOOP None processes a positive response from the server and does nothing.

------------------------------------------

QUIT None update exit
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