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ajax pagination code_PHP tutorial

Jul 13, 2016 pm 05:07 PM
ajaxcharsetgbkheaderhtmlphptextcodePaginationoutput

header("Content-type: text/html;charset=GBK");//输出编码,避免中文乱码
?>


ajax分页演示




$page=isset($_GET['page'])?intval($_GET['page']):1;        //这句就是获取page=18中的page的值,假如不存在page,那么页数就是1。
$num=10;                                      //每页显示10条数据

$db=mysql_connect("localhost","root","7529639");           //创建数据库连接
mysql_select_db("cr_download");                 //选择要操作的数据库

/*
首先咱们要获取数据库中到底有多少数据,才能判断具体要分多少页,具体的公式就是
总数据库除以每页显示的条数,有余进一。
也就是说10/3=3.3333=4 有余数就要进一。
*/

$result=mysql_query("select * from cr_userinfo");
$total=mysql_num_rows($result); //查询所有的数据

$url='test.php';//获取本页URL

//页码计算
$pagenum=ceil($total/$num);                                    //获得总页数,也是最后一页
$page=min($pagenum,$page);//获得首页
$prepg=$page-1;//上一页
$nextpg=($page==$pagenum ? 0 : $page+1);//下一页
$offset=($page-1)*$num;                                        //获取limit的第一个参数的值,假如第一页则为(1-1)*10=0,第二页为(2-1)*10=10。

//开始分页导航条代码:
$pagenav="显示第 ".($total?($offset+1):0)."-".min($offset+10,$total)." 条记录,共 $total 条记录 ";

//如果只有一页则跳出函数:
if($pagenum
$pagenav.=" 首页 ";
if($prepg) $pagenav.=" 前页 "; else $pagenav.=" 前页 ";
if($nextpg) $pagenav.=" 后页 "; else $pagenav.=" 后页 ";
$pagenav.=" 尾页 ";
$pagenav.=" 页,共 $pagenum 页";

//假如传入的页数参数大于总页数,则显示错误信息
If($page>$pagenum){
       Echo "Error : Can Not Found The page ".$page;
       Exit;
}

$info=mysql_query("select * from cr_userinfo limit $offset,$num");   //获取相应页数所需要显示的数据
While($it=mysql_fetch_array($info)){
       Echo $it['username'];
       echo "
";
}                                                              //显示数据
  echo"
";
  echo $pagenav;//输出分页导航

?>


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