通过php实现查看邮件是否被阅读

定位

当你在发送邮件时，你或许很想知道该邮件是否被对方已阅读。这里有段非常有趣的代码片段能够显示对方IP地址记录阅读的实际日期和时间。

1. <?
   
2. error_reporting(0);
   
3. Header("Content-Type: image/jpeg");
   
4. 
   
5. //Get IP
   
6. if (!empty($_SERVER['HTTP_CLIENT_IP']))
   
7. {
   
8. $ip=$_SERVER['HTTP_CLIENT_IP'];
   
9. }
   
10. elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
    
11. {
    
12. $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
    
13. }
    
14. else
    
15. {
    
16. $ip=$_SERVER['REMOTE_ADDR'];
    
17. }
    
18. 
    
19. //Time
    
20. $actual_time = time();
    
21. $actual_day = date('Y.m.d', $actual_time);
    
22. $actual_day_chart = date('d/m/y', $actual_time);
    
23. $actual_hour = date('H:i:s', $actual_time);
    
24. 
    
25. //GET Browser
    
26. $browser = $_SERVER['HTTP_USER_AGENT'];
    
27. 
    
28. //LOG
    
29. $myFile = "log.txt";
    
30. $fh = fopen($myFile, 'a+');
    
31. $stringData = $actual_day . ' ' . $actual_hour . ' ' . $ip . ' ' . $browser . ' ' . "\r\n";
    
32. fwrite($fh, $stringData);
    
33. fclose($fh);
    
34. 
    
35. //Generate Image (Es. dimesion is 1x1)
    
36. $newimage = ImageCreate(1,1);
    
37. $grigio = ImageColorAllocate($newimage,255,255,255);
    
38. ImageJPEG($newimage);
    
39. ImageDestroy($newimage);
    
40. 
    
41. ?>

复制代码