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interface Accountable
{
const ERR_MSG = "error";
public function isLoggedIn();
public function getAccount($user = '');
}
abstract class Authentication implements Accountable
{
private $account = null;
public function getAccount($user = '')
{
if ($this->account != null) {
return $this->account;
} else {
return ERR_MSG;
}
}
public function isLoggedIn()
{
return ($this->account != null);
}
}
class 
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[root@localhost usr]# groupadd mysql
[root@localhost usr]# useradd -g mysql mysql
[root@localhost usr]# cd /usr/local
[root@localhost local]# tar -zxvf mysql-5.0.51.tar.gz
[root@localhost local]# cd mysql-5.0.51
[root@localhost mysql-5.0.51# ./configure --prefix=/usr/local/my ......
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//״ͼ
//http://www.codefans.net
//
function createImage($data,$twidth,$tspace,$height){
$dataName = array();
&nb ......