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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
table,th,td{
border:1px solid black;
}
table{
border-collapse: collapse;
width: 70%;
margin: 30px auto;
text-align: center;
}
h3{
text-align: center;
}
h3 a{
text-decoration: none;
}
</style>
</head>
<body>
<?php
$db = mysqli_connect('127.0.0.1','root','root');
mysqli_select_db($db,'php');
$num = 5;
$page = isset($_GET['p'])? $_GET['p']:1;
$offset = ($page-1) * $num;
$sql = "SELECT * FROM staff LIMIT {$offset},{$num}";
$res = mysqli_query($db,$sql);
$rows = mysqli_fetch_all($res,MYSQLI_ASSOC);
//计算总页数
$number = mysqli_query($db,'SELECT COUNT(*) FROM staff');
list ($total) = mysqli_fetch_row($number);//当前记录总数在$total
$pages = ceil($total / $num);
//如果当前页数为0，强制为1
$page = ($page == 0) ? 1:$page;
$page = ($page>$pages) ? $pages:$page;
?>
<table>
<caption><h2>员工信息表</h2></caption>
<tr>
<th>ID</th>
<th>姓名</th>
<th>性别</th>
<th>年龄</th>
<th>工资</th>
</tr>
<?php
foreach ($rows as $row):
?>
<tr>
<td><?php echo $row['staff_id']?></td>
<td><?php echo $row['name']?></td>
<td><?php echo $row['sex']?></td>
<td><?php echo $row['age']?></td>
<td><?php echo $row['salay']?></td>
</tr>
<?php
endforeach;
?>
</table>
<h3>
<a href="http://127.0.0.1/515/demo5.php?p=1">首页</a>
<a href="http://127.0.0.1/515/demo5.php?p=<?php echo $page;?>">上一页</a>
<?php
for ($i=1;$i<=$pages;$i++):;
?>
<a href="http://127.0.0.1/515/demo5.php?p=<?php echo $i?>"><?php echo $i?></a>
<?php
endfor;
?>
<a href="http://127.0.0.1/515/demo5.php?p=<?php echo $page;?>">下一页</a>
<a href="http://127.0.0.1/515/demo5.php?p=<?php echo $pages; ?>">尾页</a>
</h3>
</body>
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