-
- header("content-type:text/html;charset=utf-8");
- //数据库连接
- $conn = mysql_connect("localhost", "root", "111") or die("not connnected : ".mysql_error());
- mysql_select_db("test", $conn);
- mysql_query("set names utf8");
- //查询共有多少行数据
- $sql1 = "select count(*) from user";
- $ret1 = mysql_query($sql1);
- $row1 = mysql_fetch_row($ret1);
- $tot = $row1[0];
- //每页多少行数据
- $length = 5;
- //总页数
- $totpage = ceil($tot / $length);
- //当前页数
- $page = @$_GET['p'] ? $_GET['p'] : 1;
- //limit 下限
- $offset = ($page - 1) * $length;
- echo "";
- echo "
php padding";
- echo "
";
- echo "
";
- echo "
| ID | ";
- echo "
| USER | ";
- echo "
| PASS | ";
- echo "
";
- //将查询出来的数据用表格显示
- $sql2 = "select * from user order by id limit {$offset}, {$length}";
- $ret2 = mysql_query($sql2);
- while ($row2 = mysql_fetch_assoc($ret2)) {
- echo "
";
- echo "
| {$row2['id']} | {$row2['name']} | {$row2['pass']} | ";
- echo "
";
- }
- echo "
";
- //上一页和下一页
- $prevpage = $page - 1;
- if ($page >= $totpage) {
- $nextpage = $totpage;
- } else {
- $nextpage = $page 1;
- }
- //跳转
- echo "";
- echo "";
分页代码关键点：
“$sql2 = "select * from user order by id limit {$offset}, {$length}";”，$offset、$length和页数之间的关系。
上一页和下一页的获得方式，以及临界点。
| 
