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php基于文件系统的页面计数器范例

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2016-06-08 17:27:011213browse
<script>ec(2);</script>



基于文件系统的页面计数器范例

 代码如下 复制代码

$countfile = "num.txt";
//定义计数器写入的文件是当前目录下count.txt,然后我们应当测试该文件能否打开
if (($fp = fopen($countfile, "r+")) == false) { //用读写模式打开文件,若不能打开就退出
 printf ("打开文件 %s 失败!",$countfile);
 exit;
}
else
{
 //如果文件能够正常打开,就读入文件中的数据,假设是1
 $count = fread ($fp,10);
 //读取10位数据
 $count = $count + 1;

 fclose ($fp);
 //关闭当前文件
 $fp = fopen($countfile, "w+");
 //以覆盖模式打开文件
 fwrite ($fp,$count);
 //写入加1后的新数据
 fclose ($fp);
 //并关闭文件
 echo '您好,您是第'. $count.'位访客';
}
?>


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