Microsoft Drivers 5.7.1 Preview for PHP for SQL Server Released

This post has been republished via RSS; it originally appeared at: New blog articles in Microsoft Tech Community.

We recently released the next preview of the Microsoft Drivers for PHP for SQL Server, version 5.7.1-preview. This preview release has been built with PHP 7.2+ and tested on all supported platforms.


Notable items about this release include:




  • Dropped support for PHP 7.1


  • Issue #1027 - Fixed how drivers handle query timeout settings
  • Pull Request #1049 - performance improvement for fetching from tables with many columns - cached the derived php types with column metadata to streamline data retrieval



  • 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

  • Data Classification metadata retrieval requires ODBC Driver and SQL Server 2019
  • 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
  • With ColumnEncryption enabled, calling stored procedures with XML parameters does not work (Issue #674)



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-5.7.1preview sudo pecl install pdo_sqlsrv-5.7.1preview​




  • To download Windows DLLs for PHP 7.2 or above from the PECL repository, please navigate to SQLSRV or PDO_SQLSRV.
  • Direct downloads for released binaries can also be found at the Github release tag.


David Engel

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