<?php
function jsq(){
$arr = explode("/",$_SERVER["PHP_SELF"]);//获取当前文件的位置信息并以“/”分割存入数组中
$datfile = $arr[count($arr)-1].".dat";//设置文件位置
if(!file_exists($datfile)){//如果文件不存在
$cf = fopen($datfile,"w");//建立计数器文件
fputs($cf,"0");//初始化值为0
fclose($cf);//关闭文件
}else{//文件存在则取回计数器里的数据
$cf = fopen($datfile,"r");
$counter = trim(fgets($cf,10));//读取10个长度的字符
fclose($cf);
}
$counter++;//把计数器自增1
$cf = fopen($datfile,"w");//写入新数据
fputs($cf,$counter);//将字符$counter写入打开的文件
fclose($cf);
return $counter;
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns=" http://www.w3.org/1999/xhtml">
<head>
<title>web计数器</title>
<meta http-equiv="Content-Type" content="text/html" charset=utf-8 />
</head>
<body>
您是的第<?php echo jsq(); ?>位网友
</body>
</html>