2/**
3 * filename: ext_page.class.php
4 * @package:phpbean
5 * @author :feifengxlq<feifengxlq#gmail.com><[url=http://www.phpobject.net/]http://www.phpobject.net/[/url]>
6 * @copyright :Copyright 2006 feifengxlq
7 * @license:version 2.0
8 * @create:2006-5-31
9 * @modify:2006-6-1
10 * @modify:feifengxlq 2006-11-4
11 * description:超强分页类,四种分页模式,默认采用类似baidu,google的分页风格。
12 * 2.0增加功能:支持自定义风格,自定义样式,同时支持PHP4和PHP5,
13 * to see detail,please visit [url=http://www.phpobject.net/blog/read.php]http://www.phpobject.net/blog/read.php[/url]?
14 * example:
15 * 模式四种分页模式:
16 require_once(\'../libs/classes/page.class.php\');
17 $page=new page(array(\'total\'=>1000,\'perpage\'=>20));
18 echo \'mode:1<br>\'.$page->show();
19 echo \'<hr>mode:2<br>\'.$page->show(2);
20 echo \'<hr>mode:3<br>\'.$page->show(3);
21 echo \'<hr>mode:4<br>\'.$page->show(4);
22 开启AJAX:
23 $ajaxpage=new page(array(\'total\'=>1000,\'perpage\'=>20,\'ajax\'=>\'ajax_page\',\'page_name\'=>\'test\'));
24 echo \'mode:1<br>\'.$ajaxpage->show();
25 采用继承自定义分页显示模式:
26 demo:http://www.phpobject.net/blog
27 */
28class page
29{
30 /**
31 * config ,public
32 */
33 var $page_name="PB_page";//page标签,用来控制url页。比如说xxx.php?PB_page=2中的PB_page
34 var $next_page=\'>\';//下一页
35 var $pre_page=\'<\';//上一页
36 var $first_page=\'First\';//首页
37 var $last_page=\'Last\';//尾页
38 var $pre_bar=\'<<\';//上一分页条
39 var $next_bar=\'>>\';//下一分页条
40 var $format_left=\'[\';
41 var $format_right=\']\';
42 var $is_ajax=false;//是否支持AJAX分页模式
43
44 /**
45 * private
46 *
47 */
48 var $pagebarnum=10;//控制记录条的个数。
49 var $totalpage=0;//总页数
50 var $ajax_action_name=\'\';//AJAX动作名
51 var $nowindex=1;//当前页
52 var $url="";//url地址头
53 var $offset=0;
54
55 /**
56 * constructor构造函数
57 *
58 * @param array $array[\'total\'],$array[\'perpage\'],$array[\'nowindex\'],$array[\'url\'],$array[\'ajax\']
59 */
60 function page($array)
61 {
62 if(is_array($array)){
63 if(!array_key_exists(\'total\',$array))$this->error(__FUNCTION__,\'need a param of total\');
64 $total=intval($array[\'total\']);
65 $perpage=(array_key_exists(\'perpage\',$array))?intval($array[\'perpage\']):10;
66 $nowindex=(array_key_exists(\'nowindex\',$array))?intval($array[\'nowindex\']):\'\';
67 $url=(array_key_exists(\'url\',$array))?$array[\'url\']:\'\';
68 }else{
69 $total=$array;
70 $perpage=10;
71 $nowindex=\'\';
72 $url=\'\';
73 }
74 if((!is_int($total))||($total<0))$this->error(__FUNCTION__,$total.\' is not a positive integer!\');
75 if((!is_int($perpage))||($perpage<=0))$this->error(__FUNCTION__,$perpage.\' is not a positive integer!\');
76 if(!empty($array[\'page_name\']))$this->set(\'page_name\',$array[\'page_name\']);//设置pagename
77 $this->_set_nowindex($nowindex);//设置当前页
78 $this->_set_url($url);//设置链接地址
79 $this->totalpage=ceil($total/$perpage);
80 $this->offset=($this->nowindex-1)*$this->perpage;
81 if(!empty($array[\'ajax\']))$this->open_ajax($array[\'ajax\']);//打开AJAX模式
82 }
83 /**
84 * 设定类中指定变量名的值,如果改变量不属于这个类,将throw一个exception
85 *
86 * @param string $var
87 * @param string $value
88 */
89 function set($var,$value)
90 {
91 if(in_array($var,get_object_vars($this)))
92 $this->$var=$value;
93 else {
94 $this->error(__FUNCTION__,$var." does not belong to PB_Page!");
95 }
96
97 }
98 /**
99 * 打开倒AJAX模式
100 *
101 * @param string $action 默认ajax触发的动作。
102 */
103 function open_ajax($action)
104 {
105 $this->is_ajax=true;
106 $this->ajax_action_name=$action;
107 }
108 /**
109 * 获取显示"下一页"的代码
110 *
111 * @param string $style
112 * @return string
113 */
114 function next_page($style=\'\')
115 {
116 if($this->nowindex<$this->totalpage){
117 return $this->_get_link($this->_get_url($this->nowindex+1),$this->next_page,$style);
118 }
119 return \'<span class="\'.$style.\'">\'.$this->next_page.\'</span>\';
120 }
121
122 /**
123 * 获取显示“上一页”的代码
124 *
125 * @param string $style
126 * @return string
127 */
128 function pre_page($style=\'\')
129 {
130 if($this->nowindex>1){
131 return $this->_get_link($this->_get_url($this->nowindex-1),$this->pre_page,$style);
132 }
133 return \'<span class="\'.$style.\'">\'.$this->pre_page.\'</span>\';
134 }
135
136 /**
137 * 获取显示“首页”的代码
138 *
139 * @return string
140 */
141 function first_page($style=\'\')
142 {
143 if($this->nowindex==1){
144 return \'<span class="\'.$style.\'">\'.$this->first_page.\'</span>\';
145 }
146 return $this->_get_link($this->_get_url(1),$this->first_page,$style);
147 }
148
149 /**
150 * 获取显示“尾页”的代码
151 *
152 * @return string
153 */
154 function last_page($style=\'\')
155 {
156 if($this->nowindex==$this->totalpage){
157 return \'<span class="\'.$style.\'">\'.$this->last_page.\'</span>\';
158 }
159 return $this->_get_link($this->_get_url($this->totalpage),$this->last_page,$style);
160 }
161
162 function nowbar($style=\'\',$nowindex_style=\'\')
163 {
164 $plus=ceil($this->pagebarnum/2);
165 if($this->pagebarnum-$plus+$this->nowindex>$this->totalpage)$plus=($this->pagebarnum-$this->totalpage+$this->nowindex);
166 $begin=$this->nowindex-$plus+1;
167 $begin=($begin>=1)?$begin:1;
168 $return=\'\';
169 for($i=$begin;$i<$begin+$this->pagebarnum;$i++)
170 {
171 if($i<=$this->totalpage){
172 if($i!=$this->nowindex)
173
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