个人写的一个简单通用分页类

个人学习php所写简单分页类,通用性比较强

1. /**
2. * 简单分页类
3. * @author:phpprince
4. * @QQ: 8923052
5. * @date: 2014-04-22 21:08:35
6. */
7. class Page{
8. protected $url; //地址
9. protected $allnum; //总记录数
10. protected $current; //当前页码
11. protected $pagesize; //每页显示多少条记录
12. protected $postfix; //后缀
13. protected $style; //显示样式 共3种样式,1 2 3 分别表示前5后4,前3后3,前4后4
15. public function __construct($url,$allnum,$current,$pagesize=10,$postfix='',$style=1){
16. $this->url=$url;
17. $this->allnum=$allnum;
18. $this->current=$current;
19. $this->pagesize=$pagesize;
20. $this->postfix=$postfix;
21. $this->style=$style;
22. }
24. //获取总页数
25. protected function maxPageNum(){
26. $max=ceil($this->allnum/$this->pagesize);
27. //页码超限校正
28. if($this->current>$max){
29. $this->current=$max;
30. }
31. if($this->current $this->current=1;
32. }
33. return $max;
34. }
36. //获得第一页链接完整html str
37. protected function firstUrl(){
38. if($this->current!=1)
39. {
40. return '首页';
41. }else{
42. return '首页';
43. }
44. }
46. //获得上一页链接完整html str
47. protected function prevUrl(){
48. if($this->current $fullurl='上一页';
49. }else{
50. $fullurl=$this->url.($this->current-1).$this->postfix;
51. $fullurl='上一页';
52. }
53. return $fullurl;
54. }
56. //获得下一页链接完整html str
57. protected function nextUrl(){
58. if($this->current>=$this->maxPageNum()){
59. $fullurl='下一页';
60. }else{
61. $fullurl=$this->url.($this->current+1).$this->postfix;
62. $fullurl='下一页';
63. }
64. return $fullurl;
65. }
67. //获得最后一页链接完整html str
68. protected function lastUrl(){
69. if($this->current>=$this->maxPageNum()){
70. $fullurl='末页';
71. }else{
72. $fullurl=$this->url.$this->maxPageNum().$this->postfix;
73. $fullurl='末页';
74. }
75. return $fullurl;
76. }
78. //获得指定页码完整url
79. protected function getUrl($pageno){
80. return $this->url.$pageno.$this->postfix;
81. }
83. //指定显示样式
84. protected function getStyle(){
85. switch($this->style){
86. case 1:
87. $before=5;
88. $after=4;
89. break;
90. case 2:
91. $before=3;
92. $after=3;
93. break;
94. case 3:
95. $before=4;
96. $after=4;
97. break;
98. default :
99. $before=5;
100. $after=4;
101. }
103. return array($before,$after);
104. }
106. //获得中间URL 1 2 3 4 5 ⑥ 7 8 9 10
107. protected function getMiddelUrl(){
108. $max=$this->maxPageNum(); //先获取总页,可校正当前页超限问题
109. $current=$this->current; //当前页码必须合法,才能保证下面的页码范围一定正确
110. //得到当前样式
111. list($before,$after)=$this->getStyle();
112. $startno=$current-$before; //起始页码
113. $endno=$current+$after; //终止页码
115. //为保证输出始终符合要求,在页面不超限前提下,起始页增加,则终止页必须增加,反之同理.
116. while($endno>$max||$startno if($endno>$max){ //终止页码超界
117. $endno--;
118. if($startno>1){
119. $startno--;
120. }
121. }
122. if($startno $startno++;
123. if($endno $endno++;
124. }
125. }
126. }
127. $str=''; //用于保存整个html str
128. for($i=$startno;$i $currenturl=$this->getUrl($i);
129. if($i!=$current){
130. $str.="{$i}";
131. }else{
132. $str.=''.$i.'';
133. }
134. }
135. return $str;
136. }
138. //返回完整分页html字符串
139. public function getPageStr(){
140. $str='
     '.$this->firstUrl().$this->prevUrl();
141. $str.=$this->getMiddelUrl();
142. $str.=$this->nextUrl().$this->lastUrl().'共'.$this->maxPageNum().'页'.$this->allnum.'条

';

return $str;

}

}

?>

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