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<?xml version='1.0' encoding="utf-8"?>
<!-- $Revision: 297078 $ -->
<!-- Purpose: database.vendors -->
<!-- Membership: bundled, external, pecl -->
<!-- State: experimental -->
<reference xml:id="ref.pdo-dblib" xmlns="http://docbook.org/ns/docbook">
<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>
On Windows, you should 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 FreeTDS libraries, <userinput>mssql:</userinput>
if PDO_DBLIB was linked against the Microsoft SQL Server libraries,
or <userinput>dblib:</userinput> if linked against any other variety
of DB-lib.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>host</constant></term>
<listitem>
<para>
The hostname on which the database server resides.
Defaults to 127.0.0.1.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>dbname</constant></term>
<listitem>
<para>
The name of the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>charset</constant></term>
<listitem>
<para>
The client character set.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>appname</constant></term>
<listitem>
<para>
The application name (used in sysprocesses).
Defaults to "PHP Generic DB-lib" or "PHP freetds".
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>secure</constant></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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