Dragonball Class

<?php
  /**
   * Dragonball Class
   *
   * Example of a class that prints a message once 7 calls to iFoundBall method
   * @todo Persist object between calls using serialization, database, or sessions
   * @author     Eric LInberg <elinberg@gmail.com
   */


class Dragonball {

    const MESSAGE = 'You can ask your wish'."\n";
    var $ballCount = 0;
    var $maxBallCount = 0;

    public function __construct( $ballCount,  $maxBallCount){

        if( !is_integer($ballCount) ){
            throw new \Exception('$ballCount must be of type integer');
        }

        if( !is_integer($maxBallCount) ){
            throw new \Exception('$maxBallCount must be of type integer');
        }


        $this->setBallCount($ballCount);
        $this->setMaxBallCount($maxBallCount);
    }

    private function setMaxBallCount( $count){
        $this->maxBallCount = $count;
    }

    public function iFoundBall(){
        $this->getBallCount();
    }

    private function getCount(){
        return $this->ballCount;
    }

    public function getMaxBallCount(){
        return $this->maxBallCount;
    }

    private function getBallCount(){
        $currentCount = $this->getCount();
        if($currentCount > -1 && $currentCount < 7){

            $this->incrementBallCount();
            return $currentCount;
        } else if( $currentCount == 7 ){
            $this->setBallCount(0);
            echo $this->printMessage();
        }
    }

    private function printMessage(){
        echo self::MESSAGE;
    }

    private function setBallCount( $count){
        $this->ballCount = $count;
    }

    private function incrementBallCount(){
        $this->ballCount++;
    }


}

$ballMin = 0;
$ballMax = 7;
$dragon = new Dragonball($ballMin, $ballMax);
$maxIterations = 17;
for( $i = 0; $i < $maxIterations; $i++) {
    $dragon->iFoundBall();
}


?>