http://php.flashwebhost.com/sherly/visitcounter1.php

Code:
<?php

// Lets start session.
session_start();

// check if session variable is set.

if (isset($_SESSION['visitCounter'])) {
echo '<p>Welcome, you visited our company web page ' . $_SESSION['visitCounter'] . ' times before.</p>';
// This will increase value of visitCounter by 1 each time you refresh the page.
 $_SESSION['visitCounter'] = $_SESSION['visitCounter'] + 1;

} else {

    echo '<p>Welcome, this is your first visit our company web page.</p>';
    $_SESSION['visitCounter'] = 1;
}