classGenericObject

classGenericObject

<?php

class DB
{
	const ADDR = 'localhost';
	const USER = 'showsky';
	const PASSWD = '';
	const DB = 'object';
	private static $db = null;
	
	private function __construct(){}
	
	public static function instance()
	{
		if(is_null(self::$db))
		{
			self::$db =  new PDO('mysql:dbname='.self::DB.';host='.self::ADDR);
		}
		return self::$db;
	}
}


abstract class GenericObject
{
	private $table;
	private $column;
	private $id;
	
	public function init($table, $id = NULL)
	{
		$this->table = $table;
		$this->id = $id;
		if(is_null($id)) throw new Exception('$id it null');
		$sql = sprintf("SELECT * FROM `%s` WHERE `id` = '%d'", $table, $id);
	}
	
	public function setColumn($col)
	{
	
	}
	
	
	public function getColunm($col)
	{
	
	
	}
	
	
	public function save()
	{
	
	
	}
	
	public function destory()
	{
	
	}
}



class Book implements GenericObject
{
	public function __construct()
	{
		$this->init('book',1);
	}
}



class User implements GenericObject
{
	public function __construct()
	{
		$this->init('user',3);
	}

}

Spelling: destory --> destroy ?