提供一款实例的分类函数,有需要的朋友可以参考一下,实例函数代码如下:
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<?php
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$page = $_get["page"];
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function page($rows,$page_size){
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global $page,$select_from,$select_limit,$pagenav;
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$page_count = ceil($rows/$page_size);
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if($page <= 1 || $page == '') $page = 1;
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if($page >= $page_count) $page = $page_count;
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$select_limit = $page_size;
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$select_from = ($page - 1) * $page_size.',';
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$pre_page = ($page == 1)? 1 : $page - 1;
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$next_page= ($page == $page_count)? $page_count : $page + 1 ;
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$pagenav .= "第 $page/$page_count 页 共 $rows 条记录 ";
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$pagenav .= "<a href='?page=1'>首页</a> ";
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$pagenav .= "<a href='?page=$pre_page'>前一页</a> ";
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$pagenav .= "<a href='?page=$next_page'>后一页</a> ";
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$pagenav .= "<a href='?page=$page_count'>末页</a>";
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$pagenav.=" 跳到<select name='topage' size='1' onchange='window.location="?page="+this.value'>n";
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for($i=1;$i<=$page_count;$i++){
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if($i==$page) $pagenav.="<option value='$i' selected>$i</option>n";
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else $pagenav.="<option value='$i'>$i</option>n";
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}
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}
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if (!$conn= mysql教程_connect("localhost", "root" ,"root")) die('数据库教程选择失败!');
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if (!mysql_select_db("test", $conn)) die('数据库选择失败!');
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mysql_query('set names gbk');
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$rows = mysql_num_rows(mysql_query("select * from test"));
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page($rows,2);
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$sql = "select * from test limit $select_from $select_limit";
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$rst = mysql_query($sql);
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while ($row = mysql_fetch_array($rst)){
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echo "$row[id] - $row[sex] - $row[name] <hr />";
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}
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echo $pagenav;
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?>
下面看数据库结构,新建一个数据库 test,执行下面的语句(新建一个表 test :id、sex、name 三个字段)
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create table `test` (
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`id` int( 4 ) not null auto_increment primary key ,
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`sex` int( 1 ) not null ,
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`name` varchar( 20 ) not null ) engine = myisam character set utf8 collate utf8_bin;
添加数据到 test 表,比如:
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1 1 小强
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2 0 小红
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3 0 小丽
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4 1 小兵
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5 1 张三
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6 0 李四
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7 0 吴欣
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(责任编辑:最模板) |