我非常确定具有mssql数据服务器类型的pdo需要dblib进行连接.您是否在计算机上安装了dblib?确保您可以在系统路径中的某处找到ntwdblib.dll.我知道这与您收到的错误消息并不吻合，但是我不确定我是否信任该错误消息.

i'm pretty sure that pdo with the mssql data server type requires dblib to connect. do you have dblib installed on the machine? make sure you can find ntwdblib.dll somewhere in the path on your system. i know this doesn't jive with the error message you're getting, but i'm not sure i trust the error message.