php分页实现

<?php

header("content-type:text/html;charset=utf8");

include 'conn.php';

//每页显示的数据条数

$pageSise = 2;

$result = $conn->query("select * from message ");

//数据总条数

$totalNum = $result->num_rows;

//总页数

$totalPageCount = ceil($totalNum/$pageSise);

//判断当前是哪一页

$nowPage = isset($_GET['page']) ? intval($_GET['page']) : 1;

//上一页

$prev = ($nowPage - 1 <=0)? 1 : $nowPage-1;

//下一页

$next = ($nowPage+1>=$totalPageCount) ? $totalPageCount : $nowPage +1;

//如果传入的页数大于总页数，则重新给nowpage赋值

if($nowPage>$totalPageCount || $nowPage == 0){

// echo "error:can not found the page<br>";

$nowPage = $totalPageCount;

}

//偏移量

$offset = ($nowPage -1)*$pageSise;

//sql语句

$sql = "select * from message limit $offset,$pageSise";

$result2 = $conn->query($sql);

//输出页面内容

while($row = $result2->fetch_assoc()){

echo $row['user'].'|'.$row['title'].'<br>';

}

?>

<!--分页开始，首先写好分页html和css-->

<link href="//cdn.bootcss.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">

<script src="//cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script>

<script src="//cdn.bootcss.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

 

<ul class="pagination">

<?php

echo "<li><a href='".$_SERVER['PHP_SELF']."?page=1'>首页</a></li>";

echo "<li><a href='".$_SERVER['PHP_SELF']."?page=".$prev."'>&laquo;</a></li>";

?>

 

<?php

$page = 5;

for($a=1;$a<=$page;$a++){

echo

"<li><a href='".$_SERVER['PHP_SELF']."?page=".$a."'>$a</a></li>";

}

?>

 

<?php

 

echo "<li><a href='".$_SERVER['PHP_SELF']."?page=".$next."'>&raquo;</a></li>";

echo " <li><a href='".$_SERVER['PHP_SELF']."?page=".$totalPageCount."'>尾页</a></li>";

?>

</ul>