Mod Rewrite Made Easy

1. <?php
   
2. 
   
3. /*
   
4. Rewrite Function
   
5. This function accepts an input and parses it into the $_GET, $_REQUEST, and $HTTP_GET_VARS Globals
   
6. If your script relies on register_globals being enbaled
   
7. call         extract( $_GET, EXTR_OVERWRITE );
   
8. after runnng this function to reregister the $_GET array pair values in to the global namespace
   
9. 
   
10. input:
    
11.         $request = the string variable you need parsed into the global namespace
    
12.         $array_delim = the array pair value deliminator
    
13.         $pair_delim = the deliminator that seperates pair names from pairs values
    
14.        
    
15. returns:
    
16.         void or no return value;
    
17. 
    
18. Example Usage:
    
19. -------------------------------------------------------------------------------
    
20. 
    
21. 
    
22. In the .htaccess you have:
    
23. 
    
24. RewriteEngine On
    
25. RewriteBase /
    
26. RewriteRule ^somepage/(.*)\.html somepage.php?rewrite=$1 [L]
    
27. 
    
28. Your links:
    
29. Your original link url was:         http://yoursite.com/somepage.php?id=20&name=funny
    
30. You change your url to:        http://yoursite.com/somepage/id-20/name-funny.html
    
31. 
    
32. In the script somepage.php you put this at the top:
    
33. 
    
34. <?php
    
35. 
    
36. if( $_GET['rewrite'])
    
37. {
    
38.         $request = $_GET['rewrite'];
    
39.         mod_rewrite( $request, '/', '-' );
    
40. # if you have register_globals enables uncomment the following
    
41. #        extract( $_GET, EXTR_OVERWRITE );
    
42. }
    
43. 
    
44. ?>
    
45. 
    
46. What happenes when a user clicks the link:
    
47. 
    
48. User sends request for "somepage/id-20/name-funny.html"
    
49. ModRewrite Engine is on and request matches pattern matches "somepage/"
    
50. ModRewrite engine changes the request to somepage.php?rewrite=id-20/name-funny
    
51. The PHP engine is called and the script is run
    
52. the $_GET['rewrite'] is processed by the mod_rewrite function
    
53. 
    
54. the mod_rewrite function changes this value "id-20/name-funny" into
    
55. $_GET['id'] = '20';
    
56. $_GET['name'] = 'funny';
    
57. 
    
58. then if you depend on register_globals being on ( read converting an old script )
    
59. you call this:
    
60.         extract( $_GET, EXTR_OVERWRITE );
    
61.        
    
62. right after the mod_rewrite function to put all the new $_GET variables into the global name space
    
63. 
    
64. viola !
    
65. mod_rewite made relatively easy
    
66. 
    
67. 
    
68. 
    
69. 
    
70. */
    
71. 
    
72. function mod_rewrite( $request, $array_delim, $pair_delim )
    
73. {
    
74.         global $_GET, $HTTP_GET_VARS, $_REQUEST;
    
75.         $value_pairs = explode( $array_delim, $request );
    
76.         $make_global = array();
    
77. 
    
78.         foreach( $value_pairs as $pair )
    
79.         {
    
80.                 $pair = explode( $pair_delim, $pair );
    
81.                 $_GET[$pair[0]] = $pair[1];               
    
82.                 $_REQUEST[$pair[0]] = $pair[1];               
    
83.                 $HTTP_GET_VARS[$pair[0]] = $pair[1];               
    
84.         }
    
85. }
    
86. 
    
87. ?>

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PHP,,,,,,,,,,,,,,,,,,,,晕眩。