PHP/classの継承

class S1Class {
	public function s1ParentFunc($s1Str){
		echo $s1Str . "parent br />";
	}
}
class s1ChildClass extends S1Class {
	public function s1ChildFunc($s1ChildStr){
		echo $s1ChildStr . "child br />";
	}
}
$s1Obj = new S1Class();
$s1ChildObj = new s1ChildClass();
$s1ChildObj02 = new s1ChildClass();

$s1Obj->s1ParentFunc("aaa");
$s1ChildObj->s1ParentFunc("bbb");
$s1ChildObj02->s1ChildFunc("ccc");

class Box {
    public $myItem;

    public function __construct($item) {
        $this->myItem = $item;
    }

    public function open() {
        echo "宝箱を開いた。".$this->myItem."を手に入れた。\n";
    }
}
class MagicBox extends Box {
    public function look() {
        echo "宝箱は妖しく輝いている。\n";
    }
    public function open() {
        echo "宝箱を開いた。".$this->myItem."が襲ってきた！\n";
    }
}

$box = new Box("鋼鉄の剣");
$box->open();

$magicBox = new MagicBox("モノマネモンスター");
$magicBox->look();
$magicBox->open();
	

class Player {
    public $myName;

    public function __construct($name) {
        $this->myName = $name;
    }

    public function attack($enemy) {
        echo $this->myName."は、".$enemy."を攻撃した！\n";
    }
}

echo "=== パーティーでスライムと戦う ===\n";
$hero = new Player("勇者");
$warrior = new Player("戦士");

$party = [$hero, $warrior];
foreach ($party as $member) {
    $member->attack("スライム");
}

class Player {
    public $myName;

    public function __construct($name) {
        $this->myName = $name;
    }

    public function attack($enemy) {
        echo $this->myName."は、".$enemy."を攻撃した！\n";
    }
}

class Wizard extends Player {
    public function attack($enemy) {
        echo "シャラララーン！\n";
        echo $this->myName."は、".$enemy."に炎を放った！\n";
    }
}

echo "=== パーティーでスライムと戦う ===\n";
$hero = new Player("勇者");
$warrior = new Player("戦士");
$wizard = new Wizard("魔法使い");

$party = [$hero, $warrior, $wizard];
foreach ($party as $member) {
    $member->attack("スライム");
}