How to correctly use PHP to send emails_PHP Tutorial

Application code example of PHP email function:

1. #echo send_mail($_POST["email"],$tosubject,$_POST["errortext"]);
2. echo send_mail('someone@126.com','only a test mail for test php mail function','a spam mail');
3. echo time();
5. function send_mail($to, $subject = 'No subject', $body) {
6. $loc_host = "mail .server"; //Sending computer name, feel free to
7. $smtp_acc = "smp@163.com"; //Smtp authenticated username
8. $smtp_pass= "pwdpwd"; //Smtp authentication password, generally equivalent to pop3 password
9. $smtp_host ="smtp.163.com"; //SMTP server address, similar to smtp.tom.com
10. $from="smp@163.com"; //Sender’s email address, your sending mailbox 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,$headers); //Parsed hdr
15. if($body) {$bdy = preg_replace("/^./",". .",explode($lb,$body));}//Parsed Body
17. $smtp = array(
18. //1. EHLO, expect to return 220 or 250
19. array("EHLO ".$loc_host.$lb,"220,250","HELO error: "),
20. //2. Send Auth Login , expecting to return 334
21. array("AUTH LOGIN".$lb,"334","AUTH error:"),
22. / /3. Send the Base64-encoded username, expecting to return 334
23. array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "),
24. //4. Send the Base64-encoded password and expect a return of 235
25. array(base64_encode($smtp_pass).$lb,"235" ,"AUTHENTIFICATION error : "));
26. //5. Send Mail From, expecting to return 250
27. $smtp[] = array ("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: ");
28. //6. Send Rcpt To.Expect to return 250
29. $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: ");
30. //7. Send DATA, expecting 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 To
35. $smtp[] = array("To: ".$to.$lb,"","");
36. //8.1. Send 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 a blank line to end the header sending
41. $ smtp[] = array($lb,"","");
42. //8.5. Sending message body
43. if($ bdy) {foreach($bdy as $b) {$smtp[] = array(base64_encode($b.$lb).$lb,"","");}}
44. //9. Send "." to indicate the end of the letter and expect to return 250
45. $smtp[] = array(".".$lb,"250","DATA( end)error: ");
46. //10. Send Quit, exit, and expect to return 221
47. $smtp[] = array( "QUIT".$lb,"221","QUIT error: ");
49. //Open 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; }}
54. $result_str ="";
55. //Send the command/data in the smtp array
56. foreach($smtp as $req){
57. //Send message
58. @fputs($fp, $req[0 ]);
59. //If you need to receive information returned by the server, then
60. if($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. }

I hope the above code example can help everyone fully grasp the use of PHP's email sending function.

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