php操作sqlite类。增删改查，pdo链接

直接代码：
注意：一定要写好数据库保存路径

db = new PDO('sqlite:'.dirname(__FILE__).'\log.db');		$this->table_name=$tab;		$this->tab_init();	}	public function tab_init()	{		# 表初始化,创建表		$this->db->exec("CREATE TABLE log(			id integer PRIMARY KEY autoincrement,			urls varchar(200),			ip varchar(200),			datetimes datetime default (datetime('now', 'localtime'))			)");	}	public function insert($tab_name,$key_list,$value_list)	{		// echo "INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")";		$result=$this->db->exec("INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")");		if (!$result) {			return false;		}		// echo "{{{INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")}}}}";		$res=$this->db->beginTransaction();//事务回gun			}	public function total($tab_name,$tj='')//求总记录数目	{		$sth = $this->db->prepare('SELECT  count(id) as c FROM '.$tab_name.'  '.$tj);		$sth->execute();		$result = $sth->fetchAll();		return $result[0]['c'];	}	public function update()	{		# 修改	}	function delete($value='')	{		# 删除	}	public function query($tab_name,$tj='')//表名称和条件	{		$sth = $this->db->prepare('SELECT * FROM '.$tab_name.'  '.$tj);		// echo 'SELECT * FROM '.$tab_name.'  '.$tj;		$sth->execute();		$result = $sth->fetchAll();		return $result;	}}// $db=new SqliteDB();// $res=$db->insert('log','ip,urls,datetimes','"127.0.0.1","www.baidu.com","2012-12-12 00:00:00"');//添加案例// $res=$db->query('log');//查询案例// $res=$db->total('log');//查询案例// print_r($res);// foreach ($res as $key => $row) {// 	echo  $row['urls'];// }?>