php實作網站通路量

<?php

// 啟動 Session

session_start();

$num ="";   //通路數量

//讀取count.txt檔案

$f = fopen("count.txt",'r');

while(!feof($f)){

 $line = fgets($f);

 $num = $line;

}

fclose($f);

if($_SESSION['count_type']){

 echo "session不為空num值不需要加1，您是第".$num."位訪客"."<br/>session中值:".$_SESSION["count_type"];

}else{

 $_SESSION["count_type"] = date('Y-m-d H:i:s',time());

 $num++;

 //寫

 $fw = fopen("count.txt","w");

 fwrite($fw,$num);

 fclose($fw);

 echo "session為空,将目前時間賦給session,并且将num+1您是第".$num."位訪客"."<br/>session中值:".$_SESSION["count_type"];

}

?>