}
}
class soccerball extends inflataBall
{
public function __construct()
{
$this->diameter = "22cm";
$this->targetPSI = 12;
}
}
class basketball extends inflataBall
{
public function __construct()
{
$this->diameter = "24cm";
$this->targetPSI = 9;
}
}
class pump
{
public static function inflate(inflataBall $ball)
{
$ball->inflate(5);
}
}
$b = new basketball();
pump::inflate($b);
pump::inflate($b);
pump::inflate($b);
pump::inflate($b);
