php -web counter

shell#>touch counter.txt

<?php 

session_start();

$fp=fopen("counter.txt","r+");

$counter=fgets($fp,80);

if(! isset($_SESSION['views'])) {

$_SESSION['views']=1;

$counter=doubleval ($counter)+1;

}

fseek($fp,0);

fputs($fp,$counter);

fclose($fp);

?>

<span><?echo $counter ?> </span>