PHP中文网上的分页代码

时间：2021-10-02 12:21:22

page.php

<html>

<head>

    <meta http-equiv="CONTENT-TYPE" content="text/html;">

</head>

<title>分页</title>

<style>

    div.page{

        text-align: center;

    }

    div.page a{

        border: #aa0027 solid 1px;

        text-decoration: none;

        padding: 2px 5px 2px 5px;

        margin: 2px;

    }

    div.page span.current{

        border: #000099 1px solid;background-color: #992b6c;padding: 4px 6px 4px 6px;margin: 2px;color: #fff;

        font-weight: bold;

    }

    div.page form{

        display: inline;

    }

    div.content{

        height: 200px;

    }

</style>

<body>

<?php

error_reporting(E_ALL ^ E_DEPRECATED);

?>

<?php

/** 1.传入页面 **/

$page= isset($_GET['p']) ? trim($_GET['p']) : 1;

/** 2.根据页面取出数据：php->mysql **/

$host = "localhost";

$username = 'root';

$password = 'root';

$db = 'test';

$PageSize=5;

$ShowPage=3;

//连接数据库

$conn = mysqli_connect($host, $username, $password,$db);

if(!$conn){

    echo "数据库连接失败";

    exit;

}

//编写sql获取分页数据：SELECT * FROM 表名 LIMIT 起始位置 , 显示条数

$sql = "SELECT*FROM user LIMIT ".($page-1)*$PageSize .",$PageSize";

if(!

$conn->query($sql)){

    echo "取出不成功";

};

//把sql语句传送到数据库

$result = mysqli_query($conn,$sql);

//处理我们的数据

echo "<div class='content'>";

echo "<table border=1 cellspacing=0 width=15% align='center'>";

echo "<tr><td>ID</td><td>名字</td><td>密码</td></tr>";

while($row = mysqli_fetch_array($result)){

    echo "<tr>";

    echo "<td>{$row['id']}</td>";

    echo "<td>{$row['name']}</td>";

    echo "<td>{$row['pass']}</td>";

    echo "<tr>";

}

echo "</table>";

echo "</div>";

//释放结果

mysqli_free_result($result);

//获取数据总数

$to_sql="SELECT COUNT(*)FROM user";

$to_result=mysqli_fetch_array(mysqli_query($conn,$to_sql));

$to=$to_result[0];

//计算页数

$to_pages=ceil($to/$PageSize);

mysqli_close($conn);

/** 3.显示数据+分页条 **/

$page_banner="<div class='page'>";

//计算偏移量

$pageffset=($ShowPage-1)/2;

if($page>1){

    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首页</a>";

    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'><上一页</a>";

}

//初始化数据

$start=1;

$end=$to_pages;

if ($to_pages>$ShowPage){

    if($page>$pageffset+1){

        $page_banner.="...";

    }

    if ($page>$pageffset){

        $start=$page-$pageffset;

        $end=$to_pages>$page+$pageffset?$page+$pageffset:$to_pages;

    }else{

        $start=1;

        $end=$to_pages>$ShowPage?$ShowPage:$to_pages;

    }

    if ($page+$pageffset>$to_pages){

        $start=$start-($page+$pageffset-$end);

    }

}

for($i=$start;$i<=$end;$i++) {

    if ($page == $i) {

        $page_banner .= "<span class='current'>{$i}</span>";

    } else {

        $page_banner .= "<a href='" . $_SERVER['PHP_SELF'] . "?p=" . ($i) . "'>{$i}</a>";

    }

}

//尾部省略

if ($to_pages>$ShowPage&&$to_pages>$page+$pageffset){

    $page_banner.="...";

}

if ($page<$to_pages){

    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一页></a>";

    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾页</a>";

}

$page_banner.="共{$to_pages}页";

$page_banner.="<form action='mupage.php' method='get'>";

$page_banner.="到第<input type='text'size='2'name='p'>页";

$page_banner.="<input type='submit'value='确定'>";

$page_banner.="</form></div>";

echo $page_banner;

?>

</body>

</html>

　　*

  1. 第一次打开是设置默认当前页为1:  $page= isset($_GET['p']) ? trim($_GET['p']) : 1;
  2. 得到当前网址：$_SERVER['PHP_SELF']
  3. 当页码过多时，实现了隐藏部分页码的效果

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