The thinkphp verification code is unrealistic. it is mostly caused by bom.

The thinkphp verification code is mostly a fault caused by bom. The following is the code for expelling bom: & lt ;? Phpif (isset ($ _ GET [& amp; #39; dir & amp; #39;]) {// sets the file directory $ basedir $ _ GET [& amp; #39; d...

The thinkphp verification code is mostly a fault caused by bom. The following is the code for expelling bom:

2. If (isset ($ _ GET ['dir']) {// sets the file directory
3. $ Basedir = $ _ GET ['dir'];
4. } Else {
5. $ Basedir = '.';
6. }
7. $ Auto = 1;
8. Checkdir ($ basedir );
9. Function checkdir ($ basedir ){
10. If ($ dh = opendir ($ basedir )){
11. While ($ file = readdir ($ dh ))! = False ){
12. If ($ file! = '.' & $ File! = '..'){
13. If (! Is_dir ($ basedir. "/". $ file )){
14. Echo "filename: $ basedir/$ file". checkBOM ("$ basedir/$ file ")."
    ";
15. } Else {
16. $ Dirname = $ basedir. "/". $ file;
17. Checkdir ($ dirname );
18. }
19. }
20. }
21. Closedir ($ dh );
22. }
23. }
24. Function checkBOM ($ filename ){
25. Global $ auto;
26. $ Contents = file_get_contents ($ filename );
27. $ Charset [1] = substr ($ contents, 0, 1 );
28. $ Charset [2] = substr ($ contents, 1, 1 );
29. $ Charset [3] = substr ($ contents, 2, 1 );
30. If (ord ($ charset [1]) = 239 & ord ($ charset [2]) = 187 & ord ($ charset [3]) = 191) {
31. If ($ auto = 1 ){
32. $ Rest = substr ($ contents, 3 );
33. Rewrite ($ filename, $ rest );
34. Return ("BOM found, automatically removed. _ http://www.phpfensi.com ");
35. } Else {
36. Return ("BOM found .");
37. }
38. }
39. Else return ("BOM Not Found .");
40. }
41. Function rewrite ($ filename, $ data ){
42. $ Filenum = fopen ($ filename, "w ");
43. Flock ($ filenum, LOCK_EX );
44. Fwrite ($ filenum, $ data );
45. Fclose ($ filenum );
46. }
47. ?>