Warning: PDO::__construct(): [2002] No such file or directory (trying to connect via unix:///opt/lampp/var/mysql/mysql.sock) in /data/3p.duimen.com/lib/base/PdoMysql.class.php on line 84
我发现 dns=mysql:dbname=app;host=;port=3306，没有用host值
于是我默认添加host值dns:mysql:dbname=app;host=192.168.5.250;port=3306
再次使用问题就解决了