用PHP实现mysql锁表
mysql锁表，是利用相关的SQL语句
//执行SQL语句 锁掉userinfo表
$sql = "LOCK TABLES userinfo WRITE";
//表的WRITE锁定，阻塞其他所有mysql查询进程
$Database->execute($sql);
//执行更新或写入操作
$sql = "UPDATE userinfo SET `correct_num`=`correct_num`+1 WHERE stat_date='{$current_date}'";
$Databaser->execute($sql);
//当前请求的所有写操作做完后，执行解锁sql语句
$sql = "UNLOCK TABLES";
$Database->execute($sql);