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Let me introduce to you a simple counter written in PHP. Write the number of visits into the library and call it where it is to be displayed. is a good example to get started with.
Database: db Table: num The access count of name user jb123 IP Visiting IP new number of visits The code is as follows, please pay attention to the reference comments:
<?
$mysql_server_name = "localhost";
$mysql_username = "root";
$mysql_password = "";
$mysql_database = "db";
//抓ip
$ip = getenv ("REMOTE_ADDR");
//建立连线--透过（伺服务器位置，使用者名称，使用者密码）
$conn = mysql_connect($mysql_server_name,$mysql_username,$mysql_password);
//准备好 sql语法 此语法为新增资料
$sql = "INSERT INTO `num` ( `name` ,`ip`, `new` ) VALUES ('jb123','$ip','1');";
//选取你想要处理的资料库
mysql_select_db($mysql_database,$conn);
//进行查询
$result = mysql_query($sql);
//结果并且释放连线
mysql_close($conn);
//---------------
//以下为印出资料
//建立连线 透过（伺服务器位置，使用者名称，使用者密码）
$conn = mysql_connect($mysql_server_name,$mysql_username,$mysql_password);
//准备好 sql语法 此语法为读取资料
$sql = "SELECT COUNT(*) FROM `num` WHERE name='jb123' ";
//进行查询
$result = mysql_db_query($mysql_database,$sql,$conn);
//将查询后的结果取出
$row = mysql_fetch_row($result);
//印出该资料的所有栏位
//print_r($row);
//清除查询后的结果
mysql_free_result($result);
//site bbs.it-home.org
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>php计数器</title>
<style type="text/css">
<!--
.STYLE1 {font-size: larger}
.STYLE3 {font-size: 36px; font-family: "宋体"; font-weight: bold; color: #FF0000;}
-->
</style>
</head>
<body>
<div align="center" class="STYLE1">
<p>php计数器</p>
<h1 id="开站至今已有-span-class-STYLE-row-span-人次">开站至今已有<span class="STYLE3"><?=$row[0]; ?></span>人次</h1>
</div>
</body>
</html> |
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