Il sorgente della classe YIWBirthday:

<?php
class YIWbirthday
{
    protected $hb;
    protected $ty;
    protected $yiw;
    
        public function __construct()
        {
            $this->hb = "Happy birthday";
            $this->ty = " to you";
            $this->yiw = "Your Inspiration Web";
        }
        private function Is_YIW_birthday()
        {
            if(date("j") == 30 AND date("m") == 4)
            {
                return TRUE;
            }
            else
            {
                return FALSE;
            }
        }
        public function Title()
        {
            if($this->Is_YIW_birthday())
            {
                $title = "Oggi " . $this->yiw . " compie ";
            
                $year = date("Y") - 2009;
                if($year > 1)
                {
                    $last_letter = "i";
                }
                else
                {
                    $last_letter = "o";
                }
            
                $title .= $year . " ann$last_letter";
            
                return '<h1>' . $title . '</h1>';
            }
        }
        public function Greeting()
        {
            if($this->Is_YIW_birthday())
            {
                $greeting = "";
                for ($i = 0; $i < 2; $i++)
                {
                    $greeting .= $this->hb . $this->ty . '<br />';
                }
            
                $greeting .= $this->hb . ' ' . $this->yiw . '<br />';
                $greeting .= $this->hb . $this->ty;
                
                return $greeting;
            }
        }
}

$greeting = new YIWbirthday();
echo $greeting->Title();
echo $greeting->Greeting();
?>
<br /><br />
<strong>Il sorgente della classe YIWBirthday:</strong>
<br /><br />

<?php
show_source('greeting.php');
?>