Microsoft Drivers 5.8.0 for PHP for SQL Server Released
Published Feb 03 2020 03:51 PM 6,260 Views
Steel Contributor

We recently released Microsoft Drivers for PHP for SQL Server, version 5.8.0. This production release of the SQLSRV and PDO_SQLSRV drivers has been built with PHP 7.2, 7.3, and 7.4 and tested on all supported platforms.


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




  • Dropped support for PHP 7.1
  • Dropped support for SQL Server 2008 R2, macOS Sierra, Ubuntu 18.10 and Ubuntu 19.04


  • Issue #570 - Fixed fetching varbinary data using client buffer with sqlsrv
  • Pull Request #972 - Removed redundant calls to retrieve the number of columns or rows in the current query result set
  • Pull Request #978 - PDO_SQLSRV implementation of PDO::getColumnMeta now references cached metadata rather than making an ODBC call every time
  • Pull Request #979 - Added support for Data Classification Sensitivity metadata retrieval
  • Pull Request #985 - Fixed memory issues with Data Classification data structures
  • Issue #432 - Having any invalid UTF-8 name in the connection string will no longer invoke misleading error messages
  • Issue #909 - Fixed potential exception with locale issues in macOS
  • Pull Request #992 - Produced the correct error when requesting Data Classification metadata with ODBC drivers prior to 17
  • Pull Request #1001 - Fixed compilation issue with PHP 7.4 alpha
  • Pull Request #1004 - Fixed another compilation issue with PHP 7.4 alpha
  • Pull Request #1008 - Improved data caching when fetching datetime objects
  • Pull Request #1011 - Fixed a potential buffer overflow when parsing for escaped braces in the connection string
  • Pull Request #1015 - Fixed compilation issues and addressed various memory leaks detected by PHP 7.4 beta 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
  • Pull Request #1068 - Some cosmetic changes to source code as per suggestions from a static analysis tool
  • Issue #1079 - Support sql_variant types when using client buffers


  • 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
  • Alpine Linux support is currently experimental. Production support will be added in a future release.

Known Issues

  • On Alpine Linux, the Client-Side Cursors feature may cause an access violation if both sqlsrv and pdo_sqlsrv are enabled. Either enable only sqlsrv or pdo_sqlsrv, or build PHP from source by compiling the drivers statically.
  • 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 as a package from Microsoft, or from the PECL repository for SQLSRV or PDO_SQLSRV.
  • Direct downloads for released binaries can also be found at the Github release tag.


David Engel

Version history
Last update:
‎Jul 29 2020 01:45 PM
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