PHP教程：PHP支付系统设计与典型案例分享

PHP编程
CREATE TABLE `app_margin`.`tb_status` ( 
`appid` int(10) UNSIGNED NOT NULL, 
`freeze` int(10) NOT NULL DEFAULT 0, 
`create_time` datetime NOT NULL, 
`change_time` datetime NOT NULL, 
  
PRIMARY KEY (`appid`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
CREATE TABLE `app_margin`.`tb_account_earn` ( 
`appid` int(10) UNSIGNED NOT NULL, 
`create_time` datetime NOT NULL, 
`balance` bigint(20) NOT NULL, 
`change_time` datetime NOT NULL, 
`seqid` int(10) NOT NULL DEFAULT 500000000, 
  
PRIMARY KEY (`appid`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
CREATE TABLE `app_margin`.`tb_bill` ( 
`id` int AUTO_INCREMENT NOT NULL, 
`bill_id` int(10) NOT NULL, 
`amt` bigint(20) NOT NULL, 
`bill_info` text, 
  
`bill_user` char(128), 
`bill_time` datetime NOT NULL, 
`bill_type` int(10) NOT NULL, 
`bill_channel` int(10) NOT NULL, 
`bill_ret` int(10) NOT NULL, 
  
`appid` int(10) UNSIGNED NOT NULL, 
`old_balance` bigint(20) NOT NULL, 
`price_info` text, 
  
`src_ip` char(128), 
  
PRIMARY KEY (`id`), 
UNIQUE KEY `unique_bill` (`bill_id`,`bill_channel`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
CREATE TABLE `app_margin`.`tb_assign` ( 
`id` int AUTO_INCREMENT NOT NULL, 
`assign_time` datetime NOT NULL, 
  
PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
CREATE TABLE `app_margin`.`tb_price` ( 
`name` char(128) NOT NULL, 
`price` int(10) NOT NULL, 
`info` text NOT NULL, 
  
PRIMARY KEY (`name`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
CREATE TABLE `app_margin`.`tb_applock` ( 
`appid` int(10) UNSIGNED NOT NULL, 
`lock_mode` int(10) NOT NULL DEFAULT 0, 
`change_time` datetime NOT NULL, 
  
PRIMARY KEY (`appid`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
  
INSERT `app_margin`.`tb_assign` (`id`,`assign_time`) VALUES (100000000,now());

PHP编程
$g_site_error = array( 
-1 => '服务器繁忙', 
-2 => '数据库读取错误', 
-3 => '数据库写入错误', 
  
0 => '成功', 
  
1 => '没有数据', 
2 => '没有权限', 
3 => '余额不足', 
4 => '账户被冻结', 
5 => '账户被锁定', 
6 => '参数错误', 
);

PHP编程
class AppLock 
{ 
function __construct($appid) 
{ 
$this->m_appid = $appid; 
//初始化数据 
$this->get(); 
} 
  
function __destruct() 
{ 
$this->free(); 
} 
  
  
public function alloc() 
{ 
if ($this->m_bGot == true) 
{ 
return true; 
} 
  
$this->repairData(); 
  
$appid = $this->m_appid; 
$ret = $this->update($appid,APPLOCK_MODE_FREE,APPLOCK_MODE_ALLOC); 
if ($ret === false) 
{ 
app_error_log("applock alloc fail"); 
return false; 
} 
if ($ret <= 0) 
{ 
app_error_log("applock alloc fail,affected_rows:$ret"); 
return false; 
} 
$this->m_bGot = true; 
return true; 
} 
  
public function free() 
{ 
if ($this->m_bGot != true) 
{ 
return true; 
} 
  
$appid = $this->m_appid; 
$ret = $this->update($appid,APPLOCK_MODE_ALLOC,APPLOCK_MODE_FREE); 
if ($ret === false) 
{ 
app_error_log("applock free fail"); 
return false; 
} 
if ($ret <= 0) 
{ 
app_error_log("applock free fail,affected_rows:$ret"); 
return false; 
} 
$this->m_bGot = false; 
return true; 
} 
  
function repairData() 
{ 
$db = APP_DB(); 
  
$appid = $this->m_appid; 
  
$now = time(); 
  
$need_time = $now - APPLOCK_REPAIR_SECS; 
  
$str_need_time = date("Y-m-d H:i:s", $need_time); 
  
$db->where("appid",$appid); 
$db->where("lock_mode",APPLOCK_MODE_ALLOC); 
$db->where("change_time <=",$str_need_time); 
  
$db->set("lock_mode",APPLOCK_MODE_FREE); 
$db->set("change_time","NOW()",false); 
  
$ret = $db->update(TB_APPLOCK); 
if ($ret === false) 
{ 
app_error_log("repair applock error,appid:$appid"); 
return false; 
} 
return true; 
} 
  
private function get() 
{ 
$db = APP_DB(); 
  
$appid = $this->m_appid; 
  
$db->where('appid', $appid); 
  
$query = $db->get(TB_APPLOCK); 
  
if ($query === false) 
{ 
app_error_log("AppLock get fail.appid:$appid"); 
return false; 
} 
  
if (count($query->result_array()) <= 0) 
{ 
$applock_data = array( 
'appid'=>$appid, 
'lock_mode'=>APPLOCK_MODE_FREE, 
); 
$db->set('change_time','NOW()',false); 
$ret = $db->insert(TB_APPLOCK, $applock_data); 
if ($ret === false) 
{ 
app_error_log("applock insert fail:$appid"); 
return false; 
} 
  
//重新获取数据 
$db->where('appid', $appid); 
$query = $db->get(TB_APPLOCK); 
  
if ($query === false) 
{ 
app_error_log("AppLock get fail.appid:$appid"); 
return false; 
} 
if (count($query->result_array()) <= 0) 
{ 
app_error_log("AppLock not data,appid:$appid"); 
return false; 
} 
} 
$applock_data = $query->row_array(); 
return $applock_data; 
} 
  
private function update($appid,$old_lock_mode,$new_lock_mode) 
{ 
$db = APP_DB(); 
  
$db->where('appid',$appid); 
$db->where('lock_mode',$old_lock_mode); 
  
$db->set('lock_mode',$new_lock_mode); 
$db->set('change_time','NOW()',false); 
  
$ret = $db->update(TB_APPLOCK); 
if ($ret === false) 
{ 
app_error_log("update applock error,appid:$appid,old_lock_mode:$old_lock_mode,new_lock_mode:$new_lock_mode"); 
return false; 
} 
return $db->affected_rows(); 
} 
  
//是否获取到了锁 
public $m_bGot = false; 
  
public $m_appid; 
}