<meta http-equiv="Content-Type" content="text/html;charset=utf8"/><?phpif (isset($_GET[‘page‘]))      //获取url里的page{    $page = intval($_GET[‘page‘]);}else{    $page = 1;        //其他情况，都指向第一页}function _PAGEFT($totle, $displaypg = 20, $url = ‘‘) {　　//$totle表示总条数，$displaypg表示每页显示数目，$url表示url里显示的php文件    global  $page, $firstcount, $pagenav, $_SERVER;    $GLOBALS["displaypg"] = $displaypg;    if (!$page)        $page = 1;           //没有接收到页数，默认为1    if (!$url) {        $url = $_SERVER["REQUEST_URI"];   //没有传输url,默认当前文件    }    //URL分析：    $parse_url = parse_url($url);    $url_query = $parse_url["query"]; //单独取出URL的查询字串    if ($url_query) {        $url_query = preg_replace("(^|&)page=$page", "", $url_query);        $url = str_replace($parse_url["query"], $url_query, $url);        if ($url_query)            $url .= "&page";        else            $url .= "page";    } else {        $url .= "?page";    }    $lastpg = ceil($totle / $displaypg); //最后页，也是总页数    $page = min($lastpg, $page);    $prepg = $page-1; //上一页    $nextpg = ($page == $lastpg ? 0 : $page+1); //下一页    $firstcount = ($page -1) * $displaypg;    //开始分页导航条代码：    $pagenav = "显示第 <B>" . ($totle ? ($firstcount +1) : 0) . "</B>-<B>" . min($firstcount + $displaypg, $totle) . "</B> 条记录，共 $totle 条记录";    //如果只有一页则跳出函数：    if ($lastpg <= 1)        return false;    $pagenav .= " <a href=http://www.mamicode.com/‘$url=1‘>首页</a> ";    if ($prepg)        $pagenav .= " <a href=http://www.mamicode.com/‘$url=$prepg‘>前页</a> ";    else        $pagenav .= " 前页 ";    if ($nextpg)        $pagenav .= " <a href=http://www.mamicode.com/‘$url=$nextpg‘>后页</a> ";    else        $pagenav .= " 后页 ";    $pagenav .= " <a href=http://www.mamicode.com/‘$url=$lastpg‘>尾页</a> ";    //下拉跳转列表，循环列出所有页码：    $pagenav .= "　到第 <select name=‘topage‘ size=‘1‘ onchange=‘window.location=\"$url=\"+this.value‘>\n";    for ($i = 1; $i <= $lastpg; $i++) {        if ($i == $page)        {            $pagenav .= "<option value=http://www.mamicode.com/‘$i‘ selected>$i</option>\n";        }        else            $pagenav .= "<option value=http://www.mamicode.com/‘$i‘>$i</option>\n";    }    $pagenav .= "</select> 页，共 $lastpg 页";}$conn = new PDO("mysql:localhost=host;dbname=regi","root","900914");$conn->exec("set names utf8");$result = $conn->query("select * from member");$num = $result->fetchAll();$total = count($num);_PAGEFT($total, 5);$result = $conn->query("select * from member limit $firstcount,$displaypg");while ($row=$result->fetch()){    echo "<hr><b>".$row[username]."|".md5($row[password])."</b>";}echo ‘</br>‘.$pagenav;