|
|
class mysql
{
private $db; // datebase connect
private $result; // mysql result
static private $mysql; // mysql object
private function __construct()
{ // The work before Create an object
$this->db = mysql_connect('localhost','root','');
mysql_select_db('hello', $this->db );
}
public static function getObject()
{ //if have a object,return that object,Not create
if(! self::$mysql instanceof self)
self::$mysql = new self;
return self::$mysql;
}
public function query($sql)
{
$this->result = mysql_query($sql, $this->db);
return $this->result;
}
public function fetch()
{
if( isset($this->result ) )
return mysql_fetch_assoc( $this->result );
}
public function error()
{
return 'error:'.mysql_error();
}
public function num() // for sql select result
{
return mysql_num_rows( $this->result );
}
public function close()
{ // return true or false
return mysql_close( $this->db );
}
}
這樣做看起來就只對(duì)可移植有用，其它的作用還體會(huì)不到
php技術(shù)：php中mysql模塊部分功能的簡(jiǎn)單封裝，轉(zhuǎn)載需保留來源！
鄭重聲明：本文版權(quán)歸原作者所有，轉(zhuǎn)載文章僅為傳播更多信息之目的，如作者信息標(biāo)記有誤，請(qǐng)第一時(shí)間聯(lián)系我們修改或刪除，多謝。
