分面查询原理与类封装—2018年9月10日23时50分 - PHP开发作业

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实例

<?php
//连接数据库(添加判断是否连接成功)
try {
    $pdo=new PDO('mysql:host=127.0.0.1;dbname=php','root','root');
}catch (PDOException $ex)
{
    die($ex->getMessage());
}

//取得每页数量
$num=8;


//获取总记录数
$sql="SELECT COUNT(*) FROM sys_user;";
$stmt=$pdo->prepare($sql);
$stmt->execute();
$totalRecord=$stmt->fetchColumn(PDO::ATTR_AUTOCOMMIT);


//当前页数(使用三元运算符判断当前页URL是否存在p=?,如果存在则获取,如果不存在设置1)
$currentPage=isset($_GET['p'])?$_GET['p']:1;


//设置偏移值:(当前页数-1)*每页数量$num
$offset=($currentPage-1)*$num;


//取得总页数(使用ceil进一取整)
$totalPages=ceil($totalRecord/$num);



//获取数据
$sql="SELECT * FROM sys_user LIMIT {$offset},{$num};";

$stmt=$pdo->prepare($sql);
$stmt->execute();
$data=$stmt->fetchAll(PDO::FETCH_ASSOC);


?>
<!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>分页实现</title>
    <style>
        table{
           width: 70%;
            margin: 30px auto;        /*外边框上下30,左右自动*/
            text-align: center;     /*文本居中*/
            border-collapse: collapse;
        }
        table caption{
            font-family: 微软雅黑;
            font-size:1.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }
        table tr td,table tr th,span,option,select,button{
            font-family: 微软雅黑;
            font-size: 1rem;

        }
        a{
            text-decoration-line: none;
        }
        table th{
            background-color: #4cae4c;
            color: #fff;
        }
        table,tr,td{
            border: 1px solid #4cae4c;
            height: 40px;
        }
        table tr th{
            border: 1px solid #75ae87;
            height: 40px;
        }
        .page{
            text-align: center;
        }
        .page-class{
            display: inline-block;

        }
        div a{
            /*margin-left: 0px;*/
            /*background-color: #5cb85c;*/
            color: #5f677e;
            display: inline-block;
            border: 1px solid #5f677e;

            min-width: 23px;
        }
        div a:hover{
            background-color: #317ef3;
            color: #ffffff;
            border: 1px solid #317ef3;
        }
        button:hover{
            background-color: #317ef3;
            color: #ffffff;
            /*border: 1px solid #317ef3;*/
        }
        .active{
            background-color:  #317ef3;
            color: #fff;
        }

    </style>


</head>
<body>
<table>
    <caption>用户信息表</caption>
    <tr>
        <th>Id</th>
        <th>用户</th>
        <th>名称</th>
        <th>班次</th>
        <th>性别</th>
        <th>生日</th>
        <th>年龄</th>
        <th>照片</th>
        <th>电话</th>
        <th>地址</th>
        <th>卡号</th>
        <th>邮箱</th>
        <th>QQ</th>
        <th>部门</th>
        <th>区域</th>
        <th>微信</th>
    </tr>


    <?php foreach ($data as $row): ?>
    <tr>
        <td><?php echo $row['Id'];?></td>
        <td><?php echo $row['User']; ?></td>
        <td><?php echo $row['Name']; ?></td>
        <td><?php echo $row['TypeClass'];?></td>
        <td><?php echo $row['Gender'];?></td>
        <td><?php echo $row['Birthday'];?></td>
        <td><?php echo $row['Age'];?></td>
        <td><?php echo $row['Image'];?></td>
        <td><?php echo $row['Phone'];?></td>
        <td><?php echo $row['Address'];?></td>
        <td><?php echo $row['CardNo'];?></td>
        <td><?php echo $row['Email'];?></td>
        <td><?php echo $row['Qq'];?></td>
        <td><?php echo $row['Depart'];?></td>
        <td><?php echo $row['Area'];?></td>
        <td><?php echo $row['WorkWx'];?></td>
    </tr>
    <?php endforeach;?>
</table>
<div class="page">
<p class="page-class">当前是第:<?php echo $currentPage ?>页,共:<?php echo $totalPages?>页  </p>
<a href="zy.php?p=1">首页</a>

<a  href="zy.php?p=<?php echo ($currentPage-1)<=1?1:($currentPage-1) ?>">上一页</a>
<?php for ($i=1;$i<=$totalPages;$i++): ?>
    <a class="<?php if ($currentPage==$i) {echo 'active';} ?>" href="zy.php?p=<?php echo $i ?>"><?php echo $i ?></a>

<?php endfor; ?>
<a href="zy.php?p=<?php echo ($currentPage+1)>=$totalPages?$totalPages:($currentPage+1) ?>">下一页</a>
<a href="zy.php?p=<?php echo $totalPages?>">尾页 </a>
    <span>  跳转至:</span>
<form action="" method="get" style="display: inline-block">
    <select name="p" id="">
        <?php for ($i=1;$i<=$totalPages;$i++):?>
    <option value="<?php echo $i;?>">

        <?php echo $i; ?>
    </option>

     <?php endfor; ?>
    </select>
    <button>确定</button>
</form>
</div>
</body>
</html>

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效果.png