基于文件、数据库的计数器_PHP
计数器
原创于www.dukejava.com基于文件的php计数器
〈?
//php计数器,基于文件系统。
function wincounter(){
//如果文件不存在,创建之
if(!file_exists("count.txt"))
{
exec("echo 0>count.txt");
}
//打开我们的记录文件
//得到文件大小然后依据这个文件的大小取出需要的数据
$fp=fopen("count.txt","r+);
$FileSize=filesize("count.txt");
$Count=fgets($fp,$FileSize+1);
//将记录数加上1以后存回文件中
$Count+=1;
fseek($fp,$Count);
fclose($fp);
//返回现在的访问数
return $Count;
}
?〉
基于数据库的计数器(mysql)?
1、首先创建数据库:
CREATE TABLE counter{
counter int not null,
id int not null
}
INSERT INTO counter(counter,id) VALUES(0,1)
2、计数器代码:
〈?
//PHP计数器,基于MySQL数据库服务器。
function linuxcounter(){
//连接MySQL数据库
$conn=mysql_connect("localhost",phpbook","");
//查询当前浏览数
//注意取得结果的方式
$sql="select*from counter";
$result=mysql_query($sql,$conn);
$objResult=mysql_fetch_object($result);
$count=$objResult->counter;
//更新数据库,并返回当前浏览数作为结果
$sql="update counter set counter=".($cont+1)." where id=1";
mysql_query($sql,$conn);
mysql_close($conn);
return $count+1;
}

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