phpajax分页实现程序代码分享-PHP源码

CREATE TABLE `tb_user` (
`id` int(10) NOT NULL auto_increment,
`username` varchar(50) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=10 ;

INSERT INTO `tb_user` VALUES (1, 'aaa');
INSERT INTO `tb_user` VALUES (2, 'bbb');
INSERT INTO `tb_user` VALUES (3, 'ccc');
INSERT INTO `tb_user` VALUES (4, 'ddd');
INSERT INTO `tb_user` VALUES (5, 'eee');
INSERT INTO `tb_user` VALUES (6, 'fff');
INSERT INTO `tb_user` VALUES (7, 'ggg');
INSERT INTO `tb_user` VALUES (8, 'hhh');
INSERT INTO `tb_user` VALUES (9, '&＃65533;&＃65533;&＃65533;&＃65533;');

$terry=mysql_connect("localhost","root","")or die("连接数据库失败:".mysql_error());
mysql_select_db("ajaxtest",$terry);
mysql_query("set NAMES 'utf8'");
$result=mysql_query("select * from tb_user");

$total=mysql_num_rows($result) or die(mysql_error());

$page=isset($_GET['page'])?intval($_GET['page']):1;
$page_size=3;
$url='index.php';

$pagenum=ceil($total/$page_size);
$page=min($pagenum,$page);
$prepage=$page-1;
$nextpage=($page==$pagenum?0:$page+1);
$pageset=($page-1)*$page_size;
$pagenav='';
$pagenav.="显示第".($total?($pageset+1):0)."-".min($pageset+5,$total)."记录 共".$total."条记录 现在是第 ".$page." 页 ";
if($page<=1)
$pagenav.="首页 ";
else
$pagenav.="首页 ";
if($prepage)
$pagenav.="上一页 ";
else
$pagenav.="上一页 ";
if($nextpage)
$pagenav.="下一页 ";
else
$pagenav.="下一页 ";
if($pagenum)
$pagenav.="尾页 ";
else
$pagenav.="尾页 ";
$pagenav.="共".$pagenum."页";

if($page>$pagenum){
echo "error:没有此页".$page;
exit();
}
?>

$pagenav