简单的CC防护函数（PHP）

1. $P_S_T = $t_array[0] + $t_array[1];
   
2. $timestamp = time();
   
3. session_start();
   
4. $ll_nowtime = $timestamp ;
   
5. if ($_SESSION('ll_lasttime')==null){
   
6. $ll_lasttime = $_SESSION['ll_lasttime'];
   
7. $ll_times = $_SESSION['ll_times'] + 1;
   
8. $_SESSION['ll_times'] = $ll_times;
   
9. }else{
   
10. $ll_lasttime = $ll_nowtime;
    
11. $ll_times = 1;
    
12. $_SESSION['ll_times'] = $ll_times;
    
13. $_SESSION['ll_lasttime'] = $ll_lasttime;
    
14. }
    
15. if (($ll_nowtime - $ll_lasttime)<3){
    
16. if ($ll_times>=5){
    
17. header(sprintf("Location: %s",‘http://*.xmspace.net’));
    
18. exit;
    
19. }
    
20. }else{
    
21. $ll_times = 0;
    
22. $_SESSION['ll_lasttime'] = $ll_nowtime;
    
23. $_SESSION['ll_times'] = $ll_times;
    
24. }

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3表示时间间隔，5表示刷新次数,超过设定值，立即跳转