Random License Generator

1. <?php
   
2. 
   
3. /* Random License Generator
   
4. * Version 1.0
   
5. * by Dan Kaplan <[email][email protected][/email]>
   
6. *        [url]http://AbleDesign.com/[/url] or [url]http://AccountBiller.com/[/url]
   
7. * Last Modified: June 2, 2001
   
8. * ------------------------------------------------------------------------
   
9. * Random License Generator allows you to create registration numbers of
   
10. * any specified length and format, as well as tools for connecting and
    
11. * working with a database of existing registration numbers.
    
12. *
    
13. * USE THIS PROGRAM AT YOUR OWN RISK; no warranties are expressed or
    
14. * implied. You may modify the file however you see fit, so long as
    
15. * you retain this header information and any credits throughout the file.
    
16. * If you make any modifications or improvements, please send them via
    
17. * email to Dan Kaplan <[email][email protected][/email]>.
    
18. * ------------------------------------------------------------------------
    
19. */
    
20. 
    
21. 
    
22. 
    
23. 
    
24. /*
    
25. If you wish to use this in conjunction with a MySQL database for logging
    
26. registration numbers and ensuring that the same number is not re-used, use
    
27. something like the following table setup:
    
28. 
    
29. CREATE TABLE License (
    
30.    ID int(10) unsigned NOT NULL auto_increment,
    
31.    License varchar(255) NOT NULL,
    
32.    PRIMARY KEY (ID),
    
33.    UNIQUE license_unique_index (License),
    
34.    KEY license_index (License)
    
35. );
    
36. 
    
37. $license_table = "License";
    
38. $database_name = "DATABASE";    // specify the name of your database
    
39. */
    
40. 
    
41. 
    
42. 
    
43. // if you are using the Random License Generator in conjunction with a MySQL
    
44. // database for logging the registration numbers, the following function will
    
45. // first check that the generated number is not in use and is of a valid
    
46. // format.  if you use the database method, uncomment the lines in the function
    
47. // by removing the forward slashes at the beginning of the line.
    
48. function valid_license($license) {
    
49.     global $database_name, $license_table;
    
50. 
    
51. //    if (strrpos($license,' ') > 0) {
    
52. //        return FALSE;
    
53. //    } else {
    
54. //        $SQLquery = "SELECT License FROM $license_table WHERE License = '$license'";
    
55. //        $result = mysql_db_query($database_name, $SQLquery);
    
56. //        if ($result && mysql_num_rows($result) > 0) {
    
57. //            return FALSE;
    
58. //        } else {
    
59.             return TRUE;
    
60. //        }
    
61. //    }
    
62. }
    
63. 
    
64. 
    
65. if (!isset($length)) {
    
66.     $action = "load_defaults";
    
67. }
    
68. 
    
69. if ($action == "load_defaults") {
    
70.     // this could be replaced by an included file with format preferences,
    
71.     // or you could set up multiple "templates" of preference formats here,
    
72.     // identified by the $tpl variable:
    
73. 
    
74.     if ($tpl == 1) {
    
75.         $length = 9;
    
76.         $f1 = "0|p";
    
77.         $f2 = "4|A";
    
78.         $f3 = "3|A";
    
79.         $f4 = "3|A";
    
80.         $f5 = "3|A";
    
81.         $f6 = "1|A";
    
82.         $f7 = "1|A";
    
83.         $f8 = "11|A";
    
84.         $f9 = "1|A";
    
85.     } else {    // default template
    
86.         $length = 6;
    
87.         $f1 = "0|L";
    
88.         $f2 = "4|A";
    
89.         $f3 = "3|A";
    
90.         $f4 = "3|A";
    
91.         $f5 = "3|A";
    
92.         $f6 = "1|A";
    
93.     }
    
94. 
    
95.     for ($i=1; $i <= $length; $i++) {
    
96.         $split = explode("|", ${"f".$i});
    
97.         ${"c".$i} = $split[0];
    
98.         ${"sc".$i} = $split[1];
    
99. 
    
100.         // echo "c".$i." = ". ${"c".$i} .", sc".$i." = ". ${"sc".$i} ."<br>";
     
101.     }
     
102. 
     
103. } elseif ($action == "set_defaults") {
     
104.     // for writing preferences to file; not done here, but this would create the
     
105.     // $f# variables which form the $c# and $sc# variables when loaded.  just as
     
106.     // easy to set your preferences through the "template" section above.
     
107. 
     
108.     for ($i=1; $i <= $length; $i++) {
     
109. 
     
110.         ${"f".$i} = ${"c".$i} ."|". ${"sc".$i};
     
111.         // echo "f".$i." = ". ${"f".$i} ."<br>";
     
112. 
     
113.     }
     
114. 
     
115. } elseif ($action == "add") {
     
116.     // this section is for if you have chosen to use a MySQL database for
     
117.     // logging the generated license numbers:
     
118. 
     
119.     $SQLquery = "INSERT INTO $license_table VALUES (NULL, '$license')";
     
120.     $result = mysql_db_query($database_name, $SQLquery);
     
121.     if (!$result) {
     
122.         echo("<p>Error Performing Query: ". mysql_error() ."</p>");
     
123.         exit();
     
124.     } else {
     
125.         echo "Registration #$license added to the database";
     
126.     }
     
127. }
     
128. 
     
129. 
     
130. $uppercase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
     
131. $lowercase = "abcdefghijklmnopqrstuvwxyz";
     
132. $all_letters = $uppercase.$lowercase;
     
133. $numbers = "0123456789";
     
134. $letters_and_numbers = $all_letters.$numbers;
     
135. 
     
136. $array = array (
     
137.   "0"  => array ("Same Character (Specify at right)", ""),
     
138.   "1"  => array ("All Letters & Numbers",             "$letters_and_numbers"),
     
139.   "2"  => array ("All Letters",                       "$all_letters"),
     
140.   "3"  => array ("Numbers",                           "$numbers"),
     
141.   "4"  => array ("Hyphen",                            "--"),
     
142.   "5"  => array ("Underscore",                        "__"),
     
143.   "6"  => array ("Uppercase Letters",                 "$uppercase"),
     
144.   "7"  => array ("Lowercase Letters",                 "$lowercase"),
     
145.   "8"  => array ("Uppercase Vowels",                  "AEIOUY"),
     
146.   "9"  => array ("Lowercase Vowels",                  "aeiouy"),
     
147.   "10" => array ("Uppercase Consonants",              "BCDFGHJKLMNPQRSTVWXZ"),
     
148.   "11" => array ("Lowercase Consonants",              "bcdfghjklmnpqrstvwxz")
     
149. );
     
150. 
     
151. // any other char's you want for the 'Same Character' option can be appended here, i.e. $array[1][1]."*^@!";
     
152. $all_string = $array[1][1];
     
153. for ($i=0; $i < strlen($all_string); $i++) {
     
154.     $char = substr($all_string, $i, 1);
     
155.     $all_array[] = $char;
     
156. }
     
157. 
     
158. 
     
159. $license = " ";    // a # with spaces will not pass the initial valid_license() check, forcing a # to be created
     
160. $invalid = TRUE;
     
161. 
     
162. while ($invalid) {
     
163.     $license = "";
     
164.     mt_srand((double)microtime()*1000000);
     
165. 
     
166.     for ($i=1; $i <= $length; $i++) {
     
167.         if (${"c".$i} != 0) {
     
168.             $string = $array[${"c".$i}][1];
     
169.             if ($string == "") { $string = $array[1][1]; }
     
170.             $license .= substr($string, mt_rand(0,strlen($string)-1), 1);
     
171.         } else {
     
172.             // means a 'same character' position was selected
     
173.             $license .= ${"sc".$i};
     
174.         }
     
175.     }
     
176. 
     
177.     if (valid_license($license)) {
     
178.         $invalid = FALSE;
     
179.     }
     
180. }
     
181. 
     
182. 
     
183. 
     
184. if ($length == 0) {
     
185.     $txt = "<p><b>Specify the Length of the desired Registration Number:</b></p>\n\n";
     
186. } else {
     
187. 
     
188.     // you can use a link ($add_link) or button ($add_button) for adding the generated license #
     
189.     // to the database, assuming you are using a database full of license numbers.  just uncomment
     
190.     // the corresponding lines here and after the for() loop, then place $add_button or $add_link
     
191.     // where you want it to appear on the page (like next to the displayed license #).
     
192.     //$add_link = "<a href="$PHP_SELF?action=add&license=$license&";
     
193.     //$add_button = "<form method="post" action="$PHP_SELF">\n";
     
194. 
     
195.     // combinatorics gone crazy...
     
196.     $permutations = 1;
     
197.     for ($i=1; $i <= $length; $i++) {
     
198.         $this = ${"c".$i};    // temp variable
     
199.         if (($this == 0) || ($this == 4) || ($this == 5)) {
     
200.             // for 4 & 5 (hyphen & underscore), the array contains 2 of each to
     
201.             // avoid calculation errors on some systems, but there's really only 1
     
202.             $permutations = $permutations * 1;
     
203.         } else {
     
204.             $permutations = $permutations * strlen($array[$this][1]);
     
205.         }
     
206. 
     
207.         //$add_link .= "c" .$i ."=". ${"c".$i} ."&sc" .$i ."=". ${"sc".$i} ."&";
     
208.         //$add_button .= "<input type="hidden" name="c".$i."" value="".${"c".$i}."">\n";
     
209.         //$add_button .= "<input type="hidden" name="sc".$i."" value="".${"sc".$i}."">\n";
     
210.     }
     
211. 
     
212.     //$add_link .= "length=$length">Add to Database</a>";
     
213.     //$add_button .= "<input type="hidden" name="length" value="$length">\n";
     
214.     //$add_button .= "<input type="hidden" name="action" value="add">\n";
     
215.     //$add_button .= "<input type="hidden" name="license" value="$license">\n";
     
216.     //$add_button .= "<input type="submit"value="Add to Database"></form>\n";
     
217. 
     
218.     $txt = "<p><b>Registration Number: <font color="#FF0000">$license</font></b></p>\n";
     
219.     $txt .= "<p>Number of possible values for this format: <b>". number_format($permutations) ."</b></p>\n\n";
     
220. }
     
221. 
     
222. 
     
223. $txt .= "<form method="post" action="$PHP_SELF">\n";
     
224. $txt .= "Length: <input type="text" name="length" value="$length" size="15" maxlength="32"><br><br>\n";
     
225. $txt .= "<table cellpadding="0" cellspacing="5" border="0">\n";
     
226. 
     
227. for ($i=1; $i <= $length; $i++) {
     
228.     $txt .= "<tr><td valign="top" align="right" nowrap>Character #$i: </td>";
     
229.     $txt .= "<td valign="top"><select type="text" name="c". $i ."" size="1">\n";
     
230. 
     
231.     for ($j=0; $j < count($array); $j++) {
     
232.         $txt .= "<option value="$j"";
     
233.             if (${"c".$i} == $j) { $txt .= " SELECTED"; }
     
234.         $txt .= ">". $array[$j][0] ."\n";
     
235.     }
     
236.     $txt .= "</select></td><td valign="top">\n";
     
237. 
     
238.     $txt .= "<select type="text" name="sc". $i ."" size="1">\n";
     
239.     for ($k=0; $k < count($all_array); $k++) {
     
240.         $txt .= "<option value="". $all_array[$k] .""";
     
241.             if (${"sc".$i} == $all_array[$k]) { $txt .= " SELECTED"; }
     
242.         $txt .= ">". $all_array[$k] ."\n";
     
243.     }
     
244.     $txt .= "</select>\n";
     
245.    
     
246.     $txt .= "</td></tr>\n";
     
247. }
     
248. 
     
249. $txt .= "<tr><td colspan="3" align="center">\n";
     
250. $txt .= "<input type="submit" value="Generate Registration #"> ";
     
251. $txt .= "<input type="reset" value="Reset"></td></tr></table>\n";
     
252. $txt .= "</form>\n";
     
253. 
     
254. echo $txt;
     
255. 
     
256. ?>
     

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