php 实现分页

developinglife

这是php100教程上的一个实例

 

1. <?php
   
2. 
   
3.     function _PAGEFT($totle, $displaypg = 20, $url = '') {
   
4. 
   
5.         global $page, $firstcount, $pagenav, $_SERVER;
   
6. 
   
7.         $GLOBALS["displaypg"] = $displaypg;
   
8. 
   
9.         if (!$page)
   
10.             $page = 1;
    
11.         if (!$url) {
    
12.             $url = $_SERVER["REQUEST_URI"];
    
13.         }
    
14. 
    
15.         //URL分析：
    
16. 
    
17.         $parse_url = parse_url($url);
    
18.         $url_query = $parse_url["query"]; //单独取出URL的查询字串
    
19. 
    
20.         if ($url_query) {
    
21.             $url_query = ereg_replace("(^|&)page=$page", "", $url_query);
    
22.             $url = str_replace($parse_url["query"], $url_query, $url);
    
23.             if ($url_query)
    
24.                 $url .= "&page";
    
25.             else
    
26.                 $url .= "page";
    
27.         } else {
    
28.             $url .= "?page";
    
29.         }
    
30.         $lastpg = ceil($totle / $displaypg); //最后页，也是总页数
    
31. 
    
32.         $page = min($lastpg, $page);
    
33.         $prepg = $page -1; //上一页
    
34. 
    
35.         $nextpg = ($page == $lastpg ? 0 : $page +1); //下一页
    
36. 
    
37.         $firstcount = ($page -1) * $displaypg;
    
38. 
    
39.         //开始分页导航条代码：
    
40. 
    
41.         $pagenav = "显示第 <B>" . ($totle ? ($firstcount +1) : 0) . "</B>-<B>" . min($firstcount + $displaypg, $totle) . "</B> 条记录，共 $totle 条记录";
    
42. 
    
43.         //如果只有一页则跳出函数：
    
44. 
    
45.         if ($lastpg <= 1)
    
46.             return false;
    
47. 
    
48.         $pagenav .= " <a href='$url=1'>首页</a> ";
    
49.         if ($prepg)
    
50.             $pagenav .= " <a href='$url=$prepg'>前页</a> ";
    
51.         else
    
52.             $pagenav .= " 前页 ";
    
53.         if ($nextpg)
    
54.             $pagenav .= " <a href='$url=$nextpg'>后页</a> ";
    
55.         else
    
56.             $pagenav .= " 后页 ";
    
57.         $pagenav .= " <a href='$url=$lastpg'>尾页</a> ";
    
58. 
    
59.         //下拉跳转列表，循环列出所有页码：
    
60. 
    
61.         $pagenav .= "　到第 <select name='topage' size='1' onchange='window.location=\"$url=\"+this.value'>\n";
    
62.         for ($i = 1; $i <= $lastpg; $i++) {
    
63.             if ($i == $page)
    
64.                 $pagenav .= "<option value='$i' selected>$i</option>\n";
    
65.             else
    
66.                 $pagenav .= "<option value='$i'>$i</option>\n";
    
67.         }
    
68.         $pagenav .= "</select> 页，共 $lastpg 页";
    
69.     }
    
70. 
    
71. 
    
72. include("conn.php");
    
73. 
    
74. $result=mysql_query("SELECT * FROM `test`");
    
75. $total=mysql_num_rows($result);
    
76. //调用pageft()，每页显示10条信息（使用默认的20时，可以省略此参数），使用本页URL（默认，所以省略掉）。
    
77. 
    
78. _PAGEFT($total,5);
    
79. echo $pagenav;
    
80. 
    
81. $result=mysql_query("SELECT * FROM `test` limit $firstcount,$displaypg ");
    
82. while($row=mysql_fetch_array($result)){
    
83. 
    
84. echo "<hr><b>".$row[name]." | ".$row[***];
    
85. 
    
86. }
    
87. 
    
88. 
    
89. ?>