Simple example of php counter-PHP Tutorial-php.cn

Simple example of php counter

WBOY

Release： 2016-07-25 09:00:17

Original

1058 people have browsed it

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>开站至今已有<span class="STYLE3"><?=$row[0]; ?></span>人次</h1> 
</div> 
</body>
</html>

Copy after login