<?php

class Page
{
    static $content = 'about<br/>';

    public static function footer()
    {
        return 'footer<br/>';
    }
    public static function header()
    {
        return 'header<br/>';
    }

    public static function render()
    {
        echo self::header() .
            self::$content .
            self::footer();
        echo '<br/>';
    }
}