Generate guid in PHP (tested)

Guid. Class. php file

PHP code

1. <? PHP
2. Class System
3. {
4. Function currenttimemillis ()
5. {
6. List ($ USEC, $ Sec) = explode ("", microtime ());
7. Return $ sec. substr ($ USEC, 2, 3 );
8. }
9. }
10. Class netaddress
11. {
12. VaR $ name = 'localhost ';
13. VaR $ IP = '1970. 0.0.1 ';
14. Function getlocalhost () // static
15. {
16. $ Address = new netaddress ();
17. $ Address-> name = $ _ env ["computername"];
18. $ Address-> IP = $ _ server ["server_addr"];
19. Return $ address;
20. }
21. Function tostring ()
22. {
23. Return strtolower ($ this-> name. '/'. $ this-> ip );
24. }
25. }
26. Class random
27. {
28. Function nextlong ()
29. {
30. $ TMP = rand (0, 1 )? '-':'';
31. Return $ TMP. Rand (1000,999 9). Rand (1000,999 9). Rand (1000,999 9). Rand (100,999). Rand (100,999 );
32. }
33. }
34. // Three paragraphs
35. // Segment is microsecond segment is address segment is random number
36. Class guid
37. {
38. VaR $ valuebeforemd5;
39. VaR $ valueaftermd5;
40. Function GUID ()
41. {
42. $ This-> getguid ();
43. }
44. //
45. Function getguid ()
46. {
47. $ Address = netaddress: getlocalhost ();
48. $ This-> valuebeforemd5 = $ address-> tostring (). ':'. System: currenttimemillis (). ':'. Random: nextlong ();
49. $ This-> valueaftermd5 = MD5 ($ this-> valuebeforemd5 );
50. }
51. Function newguid ()
52. {
53. $ Guid = new GUID ();
54. Return $ guid;
55. }
56. Function tostring ()
57. {
58. $ Raw = strtoupper ($ this-> valueaftermd5 );
59. Return substr ($ raw, 0, 8 ). '-'. substr ($ raw, 8, 4 ). '-'. substr ($ raw, 12, 4 ). '-'. substr ($ raw, 16, 4 ). '-'. substr ($ raw, 20 );
60. }
61. }
62. ?>

Use

PHP code

1. <? PHP
2. Require_once ("guid. Class. php ");
3. $ Guid = new GUID ();
4. Print $ guid-> tostring ();
5. ?>