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<?xml version="1.0" encoding="UTF-8"?>
<!-- $Revision: 330340 $ -->
<!-- State: experimental -->
<reference xml:id="ref.pdo-dblib" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<?phpdoc extension-membership="bundledexternal" ?>
<title>Microsoft SQL Server and Sybase Functions (PDO_DBLIB)</title>
<titleabbrev>MS SQL Server (PDO)</titleabbrev>
<partintro>
<section xml:id="pdo-dblib.intro">
&reftitle.intro;
<para>
&warn.experimental;
PDO_DBLIB is a driver that implements the <link linkend="intro.pdo">PHP
Data Objects (PDO) interface</link> to enable access from PHP to
Microsoft SQL Server and Sybase databases through the FreeTDS libary.
</para>
<para>
This extension is not available anymore on Windows with PHP 5.3 or later.
</para>
<para>
On Windows, you should use SqlSrv, an alternative driver for MS SQL is
available from Microsoft: <link xlink:href="&url.sqlsrv;">&url.sqlsrv;
</link>.
</para>
<para>
If it is not possible to use SqlSrv, you can use the
<link linkend="ref.pdo-odbc">PDO_ODBC</link> 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.
</para>
</section>
</partintro>
<refentry xml:id="ref.pdo-dblib.connection">
<refnamediv>
<refname>PDO_DBLIB DSN</refname>
<refpurpose>Connecting to Microsoft SQL Server and Sybase databases</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>
The PDO_DBLIB Data Source Name (DSN) is composed of the following elements:
<variablelist>
<varlistentry>
<term>DSN prefix</term>
<listitem>
<para>
The DSN prefix is <userinput>sybase:</userinput> if PDO_DBLIB was
linked against the Sybase ct-lib libraries,
<userinput>mssql:</userinput> if PDO_DBLIB was linked against the
Microsoft SQL Server libraries, or <userinput>dblib:</userinput> if
PDO_DBLIB was linked against the FreeTDS libraries.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>host</literal></term>
<listitem>
<para>
The hostname on which the database server resides.
Defaults to 127.0.0.1.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>dbname</literal></term>
<listitem>
<para>
The name of the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>charset</literal></term>
<listitem>
<para>
The client character set.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>appname</literal></term>
<listitem>
<para>
The application name (used in sysprocesses).
Defaults to "PHP Generic DB-lib" or "PHP freetds".
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>secure</literal></term>
<listitem>
<para>
Currently unused.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>PDO_DBLIB DSN examples</title>
<para>
The following examples show a PDO_DBLIB DSN for connecting to
Microsoft SQL Server and Sybase databases:
<programlisting><![CDATA[
mssql:host=localhost;dbname=testdb
sybase:host=localhost;dbname=testdb
dblib:host=localhost;dbname=testdb
]]>
</programlisting>
</para>
</example>
</para>
</refsect1>
</refentry>
</reference>
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