Hotfix Release: Microsoft Drivers 5.8.1 for PHP for SQL Server
Published Apr 15 2020 03:16 PM 3,718 Views
Steel Contributor

We recently released an update for the Microsoft Drivers for PHP for SQL Server. Version 5.8.1 of the SQLSRV and PDO_SQLSRV drivers only applies to Linux and macOS platforms and adds production support for Alpine Linux.


Notable items about this release since the previous production release include:



  • Pull Request #1094 - Fixed default locale issues in Alpine Linux
  • Pull Request #1095 - Removed unnecessary data structure to support Client-Side Cursors feature in Alpine Linux
  • Pull Request #1095 - Fixed logging issues when both drivers are enabled in Alpine Linux


  • No support for inout / output params when using sql_variant type
  • No support for inout / output params when formatting decimal values
  • In Linux and macOS, setlocale() only takes effect if it is invoked before the first connection. Attempting to set the locale after connecting will not work
  • Always Encrypted requires MS ODBC Driver 17+
    • Only Windows Certificate Store and Azure Key Vault are supported. Custom Keystores are not yet supported
    • Issue #716 - With Always Encrypted enabled, named parameters in subqueries are not supported
    • Issue #1050 - With Always Encrypted enabled, insertion requires the column list for any tables with identity columns
    • Always Encrypted limitations

Known Issues

  • Connection pooling on Linux or macOS is not recommended with unixODBC < 2.3.7
  • When pooling is enabled in Linux or macOS
    • unixODBC <= 2.3.4 (Linux and macOS) might not return proper diagnostic information, such as error messages, warnings and informative messages
    • due to this unixODBC bug, fetch large data (such as xml, binary) as streams as a workaround. See the examples here


Let us know how we are doing and how you use our drivers by taking our pulse survey.



  • On Linux and macOS run the commands below:



sudo pecl install sqlsrv
sudo pecl install pdo_sqlsrv



  • Windows DLLs for PHP 7.2 or above can be downloaded from the PECL repository for SQLSRV or PDO_SQLSRV, however the Windows binaries for 5.8.1 do not contain any changes over 5.8.0.
  • Direct downloads for released binaries can also be found at the Github release tag.


David Engel

Version history
Last update:
‎Apr 16 2020 03:43 PM
Updated by: