漂亮的PHP验证码类

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

使用说明：

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