据我所知，没有 64 位 PHP 兼容的 SQL Server 库.您必须安装 WAMPServer 32 位.这不是 WAMPServer 的限制，只是微软尚未完成 64 位 PHP 扩展.

As far as I am aware there is no 64bit PHP compatible SQL Server library. You will have to install WAMPServer 32bit. This is not a WAMPServer limitation, its just that Microsoft has not yet completed the 64 bit PHP extension.

可能他们在等待 PHP7，这是第一个真正的 64 位 PHP 版本

Probably they were waiting for PHP7 which is the first truly 64bit version of PHP