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<title>Microsoft SQL Server and Sybase Functions (PDO_DBLIB)</title>
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<h1 class="title">Microsoft SQL Server and Sybase Functions (PDO_DBLIB)</h1>
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<h2 class="title">Introduction</h2>
<p class="para">
<div class="warning"><strong class="warning">Warning</strong><p class="simpara">This extension is
<em class="emphasis">EXPERIMENTAL</em>. The behaviour of this extension including
the names of its functions and any other documentation surrounding this
extension may change without notice in a future release of PHP.
This extension should be used at your own risk.</p></div>
PDO_DBLIB is a driver that implements the <a href="intro.pdo.html" class="link">PHP
Data Objects (PDO) interface</a> to enable access from PHP to
Microsoft SQL Server and Sybase databases through the FreeTDS libary.
</p>
<p class="para">
This extension is not available anymore on Windows with PHP 5.3 or later.
</p>
<p class="para">
On Windows, you should use SqlSrv, an alternative driver for MS SQL is
available from Microsoft: <a href="http://msdn.microsoft.com/en-us/sqlserver/ff657782.aspx" class="link external">» http://msdn.microsoft.com/en-us/sqlserver/ff657782.aspx
</a>.
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<p class="para">
If it is not possible to use SqlSrv, you can use the
<a href="ref.pdo-odbc.html" class="link">PDO_ODBC</a> driver to connect to
Microsoft SQL Server and Sybase databases, as the native Windows DB-LIB
is ancient, thread un-safe and no longer supported by Microsoft.
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<h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="ref.pdo-dblib.connection.html">PDO_DBLIB DSN</a> — Connecting to Microsoft SQL Server and Sybase databases</li></ul>
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