Microsoft Drivers 5.5.0 Preview for PHP for SQL Server Released!

Hi all,

We are excited to announce a new technical preview for SQLSRV and PDO_SQLSRV drivers for PHP. The drivers now support PHP 7.3 and include some fixes and new features.

Notable items about the 5.5.0-preview release:


  • Added support for PHP 7.3.0
  • Added support for Linux Ubuntu 18.10 and mac OS Mojave
  • Feature Request #415 - new options at connection and statement levels for both drivers for formatting decimal values in the fetched results


  • Pull Request #854 - Clear Azure Key Vault data after connection attributes are successfully set or when exception is thrown
  • Pull Request #855 - Improved performance by saving meta data before fetching and skipping unnecessary conversions for numeric data
  • Pull Request #865 - Corrected the way SQLPutData and SQLParamData are used when sending stream data to the server
  • Pull Request #878 - Modified the config files to enable Spectre Mitigations for PHP 7.1 (see related Request #836)
  • Pull Request #891 - Improved performance of Unicode conversions
  • Pull Request #892 - Removed warning messages while compiling extensions


  • 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
    • 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
  • With ColumnEncryption enabled, calling stored procedures with XML parameters does not work (Issue #674)
  • With ColumnEncryption enabled, fetching varbinary(max), varchar(max) or nvarchar(max) may fail with ODBC Driver 17.3 CTP


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Direct downloads can be found on the Github release tag.

David Engel