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? ??? ?? PHP ???? PHP?? ??? ???? ???? ???? ??

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Jul 25, 2016 am 08:45 AM
  1. function show_page($count,$page,$page_size)
  2. {
  3. $page_count = ceil($count/$page_size); //計算得出總頁數(shù)
  4. $init=1;
  5. $page_len=7;
  6. $max_p=$page_count;
  7. $pages=$page_count;
  8. //判斷當前頁碼
  9. $page=(empty($page)||$page<0)?1:$page;
  10. //獲取當前頁url
  11. $url = $_SERVER['REQUEST_URI'];
  12. //去掉url中原先的page參數(shù)以便加入新的page參數(shù)
  13. $parsedurl=parse_url($url);
  14. $url_query = isset($parsedurl['query']) ? $parsedurl['query']:'';
  15. if($url_query != ''){
  16. $url_query = preg_replace("/(^|&)page=$page/",'',$url_query);
  17. $url = str_replace($parsedurl['query'],$url_query,$url);
  18. if($url_query != ''){
  19. $url .= '&';
  20. }
  21. } else {
  22. $url .= '?';
  23. }
  24. //分頁功能代碼
  25. $page_len = ($page_len%2)?$page_len:$page_len 1; //頁碼個數(shù)
  26. $pageoffset = ($page_len-1)/2; //頁碼個數(shù)左右偏移量
  27. $navs='';
  28. if($pages != 0){
  29. if($page!=1){
  30. $navs.="首頁 "; //第一頁
  31. $navs.="上頁"; //上一頁
  32. } else {
  33. $navs .= "首頁";
  34. $navs .= "上頁";
  35. }
  36. if($pages>$page_len)
  37. {
  38. //如果當前頁小于等于左偏移
  39. if($page<=$pageoffset){
  40. $init=1;
  41. $max_p = $page_len;
  42. }
  43. else //如果當前頁大于左偏移
  44. {
  45. //如果當前頁碼右偏移超出最大分頁數(shù)
  46. if($page $pageoffset>=$pages 1){
  47. $init = $pages-$page_len 1;
  48. }
  49. else
  50. {
  51. //左右偏移都存在時的計算
  52. $init = $page-$pageoffset;
  53. $max_p = $page $pageoffset;
  54. }
  55. }
  56. }
  57. for($i=$init;$i<=$max_p;$i )
  58. {
  59. if($i==$page){$navs.="".$i.'';}
  60. else {$navs.=" ".$i."";}
  61. }
  62. if($page!=$pages)
  63. {
  64. $navs.=" 下頁 ";//下一頁
  65. $navs.="末頁"; //最后一頁
  66. } else {
  67. $navs .= "下頁";
  68. $navs .= "末頁";
  69. }
  70. echo "$navs";
  71. }
  72. }
復制代碼

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