Static Class Members

<?php
    class visitors
    {
        private static $visitors = 0;
        function __construct(){
            self::$visitors++;
        }        static function getVisitors(){
            return self::$visitors;
        }    }
    $visits = new visitors();    echo visitors::getVisitors()."<br />";
    $visits2 = new visitors();
    echo visitors::getVisitors()."<br />";?>

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