php实现标签云的一段代码

2. /**
3. * WNiaoBlog Tag Template ShowTag
4. *
5. * @package WNiaoBlog
6. *
7. * @subpackage Tag
8. */
9. //Connect the database
10. //include('../include/config.php');
11. /**
12. * CountTag() - Statistics labels appear the number,and the data to be stored in the two array
13. *
14. * GetTag() - Access the Tag's Labels from the database
15. */
16. function CountTag($String){
17. $TagString = $String;
18. //echo $TagString."
19. ";
20. $Tags = explode(",",$TagString);
21. $n = 1;
22. $i = 0;
23. $Continue = TRUE;
24. //echo $Tags[1]."
25. ";
26. //in case no-label's article
27. while($Tags[$n] OR $Tags[++$n] OR $Tags[++$n] ){
28. $EachTag = $Tags[$n++];
29. //echo $EachTag."
30. ";
31. $Continue = TRUE;
32. for($i=0;$Continue;$i++){
33. if( $EachTagStr[$i][0] ) {
34. if( $EachTagStr[$i][0] == $EachTag ){
35. $EachTagStr[$i][1]++;
36. $Continue = FALSE;
37. }
38. else {
39. if( $EachTagStr[$i+1][0] ) $Continue = TRUE;
40. else {
41. $EachTagStr[$i+1][0] = $EachTag;
42. $EachTagStr[$i+1][1] = 1;
43. $Continue = FALSE;
44. }
45. }
46. } else { //initialize the array $EachTagStr[][]
47. $EachTagStr[$i][0] = $EachTag;
48. $EachTagStr[$i][1] = 1;
49. $Continue = FALSE;
50. }
51. }
52. }
53. return $EachTagStr;
54. }
55. function ShowTag($Row,$ablink){
56. $i = 0;
57. while($Row[$i][0]){
58. $EachTag = $Row[$i][0];
59. $EachCount = $Row[$i][1];
60. $Size = SetSize($EachCount);
61. echo " ".$EachTag."(".$EachCount.")"." ";
62. $i++;
63. }
64. }
65. function GetTag(){
66. $QuerySet = mysql_query("select * from article");
67. while($Row = mysql_fetch_array($QuerySet)){
68. $Tag = $Row['tag'];
69. $TagString = $TagString.",".$Tag;
70. }
71. return $TagString;
72. }
73. function SetSize($Size){
74. $Size += 10;
75. if($Size > 30)
76. $Size = 30;
77. return $Size;
78. }
79. //Go
80. echo "
81. ";
82. echo "标签云";
83. $String = GetTag();
84. $Row = CountTag($String);
85. ShowTag($Row,$ablink);
86. echo "
87. ";
88. ?>

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