PHP5のオブジェクト指向

<?php
class Player {
        public function __construct($name) {
                $this->_name = $name;
        }
        private $_name;
        public function get_name() {
                return $this->_name;
        }
}

class Team {
        public function __construct($name) {
                $this->_name = $name;
                $this->_aryPlayer = array(); // 追加
        }
        private $_name;
        public $_aryPlayer;
        private $_coach;
        public function add($player) {
                $this->_aryPlayer[] = $player; // 修正
        }
        public function set_coach($coach) {
                $this->_coach = $coach;
        }

        public function get_coach() {
                return $this->_coach;
        }

        public function &get_aryPlayer() {
                return $this->_aryPlayer;
        }
}

$team = new Team(1,Giants);
$player1 = new Player(Oh);
$player2 = new Player(Nagashima);

$team->add($player1);
$team->add($player2);
$team->set_coach($player2);

//これはうまくいきます。
echo $team->get_coach()->get_name();

//次がうまくいきません。
//echo $team->get_aryPlayer()[0]->get_name();
$players = $team->get_aryPlayer();
echo $players[0]->get_name();
?>

$players = $team->get_aryPlayer();
foreach($member as $player) {
	echo $player->get_name();
}
//OhNagashima

class Player {
    private $_Team;
    public function get_Team() {
        return $self->_Team->get_Player();
    }
}

class Team {
    private $_Player;
    public function get_Player() {
        return $self->_Player->get_Team();
    }
}

テーブル1 team

| team_id | team_name |
------------------------
| 1       | Giants    |
| 2       | Tigers    |
------------------------
テーブル2 player

| player_name | team_id |
--------------------------
| Oh          | 1       |
| Nagashima   | 1       |
--------------------------

class Team {
	$_name;
	$_aryPlayers = array();
	public function set_name($name) {
		$this->_name = $name;
	}
}

class Player {
	$_name;
	$_Team;
	
	static getPlayers($db) {
		$stt = $db->prepare("SELECT * FROM player INNER JOIN team ON player.team_id = team.team_id");
		$rs = $db->execute($stt);
		$aryPlayer = array();
		while($row = $rs->fetchRow("DB_FETCHMODE_ASSOC")) {
			$objPlayer = new Player();
			$objPlayer->set_name($row['player_name']);
			$objPlayer->get_Team()->set_name($row['team_name']);
		}
		return $aryPlayer;
	}
}

$db = DB::connect("mysql://id:pass@localhost/baseball");
$players = Player::getPlayers($db);
foreach($players as $player) {
	echo $player->get_name();
	echo " in "
	echo $player->get_Team()->get_name();
	echo "\\\\n";
}

//Oh in Giants
//Nagashima in Giants

class Team {
	$_name;
	$_aryPlayers = array();

	public static function getTeamFromId($db,$team_id) {
		$stt = $db->prepare("SELECT * FROM team WHERE team_id=?");
		$rs = $db->execute($stt,array($team_id));
		$objTeam = new Team();
		while($row = $rs->fetchRow("DB_FETCHMODE_ASSOC") {
			$objTeam->set_name($row['team_name']);
		}
		return $objTeam;
	}
}

class Player {
	$_name;
	$_team_id;
	
	static getPlayers($db) {
		$stt = $db->prepare("SELECT * FROM player");
		$rs = $db->execute($stt);
		$aryPlayer = array();
		while($row = $rs->fetchRow("DB_FETCHMODE_ASSOC")) {
			$objPlayer = new Player();
			$objPlayer->set_team_id($row['team_id']);
			$objPlayer->set_name($row['player_name']);
		}
		return $aryPlayer;
	}
}

$db = DB::connect("mysql://id:pass@localhost/baseball");
$players = Player::getPlayers($db);
foreach($players as $player) {
	echo $player->get_name();
	$team_id = $player->get_team_id();
	$team_name = Team::getTeam($db,$team_id)->get_name();
	echo " in ";
	echo $team_name;
}
//Oh in Giants
//Nagashima in Giants