in need of simple php code.

[somik]

<?php

/**
 * @author Somik Khan
 * @copyright 2011
 */

// Enter the name of the file which the count is stored to
$filename = "counter.txt";

// Get action from $_GET['type'] or $_POST['type'] variable
$action = $_POST['type'];




// Load the file into $visit file
$visit = file_get_contents($filename);
// Remove garbase data and only keep the integer value of visit
$visit = intval($visit);


if($action == "increase"){
    $visit++;
    file_put_contents($filename,$visit);
}
elseif($action == "decrease"){
    $visit--;
    file_put_contents($filename,$visit);
} 

echo $visit; 

?>

Usage:

To increase: 
Go to: http://www.site.com/example.php?type=increase
OR post "type" with value "increase" to example.php

To decrease: 
Go to: http://www.site.com/example.php?type=decrease
OR post "type" with value "decrease" to example.php

To display, just add:
include("example.php");