php分页类源码与调用示例

2. class Page {
3. private $total; //总记录
4. private $pagesize;//每页显示多少条
5. private $limit; //limit
6. private $page; //当前页码
7. private $pagenum; //总页码
8. private $url; //地址
9. private $bothnum; //两边保持数字分页的量
11. //构造方法初始化
12. public function __construct($_total, $_pagesize) {
13. $this->total = $_total ? $_total : 1;
14. $this->pagesize = $_pagesize;
15. $this->pagenum = ceil($this->total / $this->pagesize);
16. $this->page = $this->setPage();
17. $this->limit = "LIMIT ".($this->page-1)*$this->pagesize.",$this->pagesize";
18. $this->url = $this->setUrl();
19. $this->bothnum = 2;
20. }
22. //拦截器
23. private function __get($_key) {
24. return $this->$_key;
25. }
27. //获取当前页码
28. private function setPage() {
29. if (!empty($_GET['page'])) {
30. if ($_GET['page'] > 0) {
31. if ($_GET['page'] > $this->pagenum) {
32. return $this->pagenum;
33. } else {
34. return $_GET['page'];
35. }
36. } else {
37. return 1;
38. }
39. } else {
40. return 1;
41. }
42. }
44. //获取地址
45. private function setUrl() {
46. $_url = $_SERVER["REQUEST_URI"];
47. $_par = parse_url($_url);
48. if (isset($_par['query'])) {
49. parse_str($_par['query'],$_query);
50. unset($_query['page']);
51. $_url = $_par['path'].'?'.http_build_query($_query);
52. }
53. return $_url;
54. } //数字目录
55. private function pageList() {
56. for ($i=$this->bothnum;$i>=1;$i--) {
57. $_page = $this->page-$i;
58. if ($_page < 1) continue;
59. $_pagelist .= ' url.'&page='.$_page.'">'.$_page.' ';
60. }
61. $_pagelist .= ' '.$this->page.' ';
62. for ($i=1;$i<=$this->bothnum;$i++) {
63. $_page = $this->page+$i;
64. if ($_page > $this->pagenum) break;
65. $_pagelist .= ' url.'&page='.$_page.'">'.$_page.' ';
66. }
67. return $_pagelist;
68. }
70. //首页
71. private function first() {
72. if ($this->page > $this->bothnum+1) {
73. return ' url.'">1 ...';
74. }
75. }
77. //上一页
78. private function prev() {
79. if ($this->page == 1) {
80. return '上一页';
81. }
82. return ' url.'&page='.($this->page-1).'">上一页 ';
83. }
85. //下一页
86. private function next() {
87. if ($this->page == $this->pagenum) {
88. return '下一页';
89. }
90. return ' url.'&page='.($this->page+1).'">下一页 ';
91. }
93. //尾页
94. private function last() {
95. if ($this->pagenum - $this->page > $this->bothnum) {
96. return ' ...url.'&page='.$this->pagenum.'">'.$this->pagenum.' ';
97. }
98. }
100. //分页信息
101. public function showpage() {
102. $_page .= $this->first();
103. $_page .= $this->pageList();
104. $_page .= $this->last();
105. $_page .= $this->prev();
106. $_page .= $this->next();
107. return $_page;
108. }
109. }
110. ?>

2，分页类调用：

2. $_page = new Page($_total,$_pagesize); //$_total 是数据集的总条数,$_pagesize 是每页显示的数量.
3. ?>