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php实现标签云的一段代码

时间：2021-07-01 10:21:17 帮助过：17人阅读

  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 " < a style='color:BLUE ; font-size:".$Size." ' onMouseOver=this.style.color='#900000' onMouseOut=this.style.color='BLUE' href='".$ablink."tag?tag=".$EachTag."' target='_self' > ".$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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