How to correctly use the PHP email sending Function

Example code of the PHP email sending function:

1. # Echo send_mail ($ _ POST ["email"], $ tosubject, $ _ POST ["errortext"]);
2. Echo send_mail ('someone @ 126.com ', 'only a test mail for test php mail function', 'spam mail ');
3. Echo time ();
4.  
5. Function send_mail ($ to, $ subject = 'no subobject', $ body ){
6. $ Loc_host = "mail. server"; // The Name Of The email sending computer.
7. $ Smtp_acc = "smp@163.com"; // Smtp authenticated user name
8. $ Smtp_pass = "pwdpwd"; // password for Smtp authentication, which is generally equivalent to a pop3 PASSWORD
9. $ Smtp_host = "smtp.163.com"; // SMTP server address, similar to smtp.tom.com
10. $ From = "smp@163.com"; // Email address of the sender, your mail address
11. $ Deliver = $ smtp_acc; // reply to the specified email address
12. $ Headers = "Content-Type: text/plain; charset =" gb2312 "rnContent-Transfer-Encoding: base64 ";
13. $ Lb = "rn"; // linebreak
14. $ Hdr = explode ($ lb, $ headers); // resolved hdr
15. If ($ body) {$ bdy = preg_replace ("/^./", "..", explode ($ lb, $ body);} // The parsed Body
16.  
17. $ Smtp = array (
18. // 1. EHLO, expecting to return 220 or 250
19. Array ("EHLO". $ loc_host. $ lb, "220,250", "HELO error :"),
20. // 2. send Auth Login and expect to return 334
21. Array ("auth login". $ lb, "334", "AUTH error :"),
22. // 3. Send the Base64-encoded user name, and a 334 error is returned.
23. Array (base64_encode ($ smtp_acc). $ lbs, "334", "AUTHENTIFICATION error :"),
24. // 4. Send the Base64 encoded password and expect to return 235
25. Array (base64_encode ($ smtp_pass). $ lbs, "235", "AUTHENTIFICATION error :"));
26. // 5. Send Mail From and expect to return 250
27. $ Smtp [] = array ("mail from: <". $ from. ">". $ lb, "250", "mail from error :");
28. // 6. Send Rcpt. Expected 250
29. $ Smtp [] = array ("rcpt to: <". $ to. ">". $ lb, "250", "rcpt to error :");
30. // 7. Send DATA and expect to return 354
31. $ Smtp [] = array ("DATA". $ lb, "354", "DATA error :");
32. // 8.0. Send From
33. $ Smtp [] = array ("From:". $ deliver. $ lb ,"","");
34. // 8.2. Send.
35. $ Smtp [] = array ("To:". $ to. $ lb ,"","");
36. // 8.1. Sending title
37. $ Smtp [] = array ("Subject:". $ subject. $ lb ,"","");
38. // 8.3. Send other Header content
39. Foreach ($ hdr as $ h) {$ smtp [] = array ($ h. $ lb ,"","");}
40. // 8.4. Send an empty line and end Header sending
41. $ Smtp [] = array ($ lb ,"","");
42. // 8.5 send email subject
43. If ($ bdy) {foreach ($ bdy as $ B) {$ smtp [] = array (base64_encode ($ B. $ lb ). $ lb ,"","");}}
44. // 9. Sending "." indicates that the mail is over and 250 is expected to be returned.
45. $ Smtp [] = array (".". $ lb, "250", "DATA (end) error :");
46. // 10. Send Quit and exit. expected to return 221
47. $ Smtp [] = array ("QUIT". $ lb, "221", "QUIT error :");
48.  
49. // Open the smtp server port
50. $ Fp = @ fsockopen ($ smtp_host, 25 );
51. If (! $ Fp) echo "<B> Error: </B> Cannot conect to". $ smtp_host. "<br> ";
52. While ($ result = @ fgets ($ fp, 1024) {if (substr ($ result, 3, 1) = "") {break ;}}
53.  
54. $ Result_str = "";
55. // Send commands/data in the smtp Array
56. Foreach ($ smtp as $ req ){
57. // Send information
58. @ Fputs ($ fp, $ req [0]);
59. // If you want to receive the information returned by the server
60. If ($ req [1]) {
61. // Receive information
62. While ($ result = @ fgets ($ fp, 1024 )){
63. If (substr ($ result, 3, 1) = "") {break ;}
64. };
65. If (! Strstr ($ req [1], substr ($ result, 0, 3 ))){
66. $ Result_str. = $ req [2]. $ result. "<br> ";
67. }
68. }
69. }
70. // Close the connection
71. @ Fclose ($ fp );
72. Return $ result_str;
73. }

We hope that the above code example will allow you to fully master the application of the PHP mail sending function.