The [5.6.0](https://windows.php.net/downloads/pecl/releases/sqlsrv/5.6.0/) directory exists on windows.php.net since February 22 but it's empty:  The fact that https://pecl.php.net/rest/r/sqlsrv/stable.txt points to 5.6.0 [breaks](https://ci.appveyor.com/project/doctrine/dbal/builds/23090110/job/exu86rhatneyhwb7) build automation (e.g. on [doctrine/dbal](https://github.com/doctrine/dbal)). One of the published [build logs](https://windows.php.net/downloads/pecl/releases/sqlsrv/5.6.0/logs/php_sqlsrv-5.6.0-7.1-nts-vc14-x64-logs.zip) contains: > C:\php-snap-build\php-src\php71\x64\php-src\configure.js(5499, 13) Microsoft JScript runtime error: 'PHP_PDO_SQLSRV' is undefined