} public function jump() { echo "Jumping\n"; } public function dribble() { echo "Dribbling\n"; } public function shoot() { echo "Shooting\n"; } public function dunk() { echo "Dunking\n"; } public function pass() { echo "Passing\n"; } public function getAge() { echo $this->name . "'s age is " . ($this->age - 2) . "\n"; } } // 类名加“::”可以访问类的静态成员 // 静态成员不需要实例化就可以访问 echo "The president is " . NbaPlayer::$president . "\n"; NbaPlayer::changePresident("Adam Silver"); echo "The president is changed to " . NbaPlayer::$president . "\n";