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<?xml version='1.0' encoding="utf-8"?>
<!-- $Revision: 297078 $ -->
<!-- Purpose: database.vendors -->
<!-- Membership: bundled, external, pecl -->
<reference xml:id="ref.pdo-mysql" xmlns="http://docbook.org/ns/docbook">
<title>MySQL Functions (PDO_MYSQL)</title>
<titleabbrev>MySQL (PDO)</titleabbrev>
<partintro>
<section xml:id="pdo-mysql.intro">
&reftitle.intro;
<para>
PDO_MYSQL is a driver that implements the <link linkend="intro.pdo">PHP
Data Objects (PDO) interface</link>
to enable access from PHP to MySQL 3.x, 4.x and 5.x databases.
</para>
<para>
PDO_MYSQL will take advantage of native prepared statement support
present in MySQL 4.1 and higher. If you're using an older version of the
mysql client libraries, PDO will emulate them for you.
</para>
<warning>
<para>
Beware: Some MySQL table types (storage engines) do not support transactions. When
writing transactional database code using a table type that does not support
transactions, MySQL will pretend that a transaction was initiated successfully.
In addition, any DDL queries issued will implicitly
commit any pending transactions.
</para>
</warning>
</section>
&reference.pdo-mysql.constants;
</partintro>
<refentry xml:id="ref.pdo-mysql.connection">
<refnamediv>
<refname>PDO_MYSQL DSN</refname>
<refpurpose>Connecting to MySQL databases</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>
The PDO_MYSQL Data Source Name (DSN) is composed of the following elements:
<variablelist>
<varlistentry>
<term>DSN prefix</term>
<listitem>
<para>
The DSN prefix is <userinput>mysql:</userinput>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>host</constant></term>
<listitem>
<para>
The hostname on which the database server resides.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>port</constant></term>
<listitem>
<para>
The port number where the database server is listening.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>dbname</constant></term>
<listitem>
<para>
The name of the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>unix_socket</constant></term>
<listitem>
<para>
The MySQL Unix socket (shouldn't be used with <literal>host</literal>
or <literal>port</literal>).
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>PDO_MYSQL DSN examples</title>
<para>
The following example shows a PDO_MYSQL DSN for connecting to
MySQL databases:
<programlisting>
<![CDATA[
mysql:host=localhost;dbname=testdb
]]>
</programlisting>
More complete examples:
<programlisting>
<![CDATA[
mysql:host=localhost;port=3307;dbname=testdb
mysql:unix_socket=/tmp/mysql.sock;dbname=testdb
]]>
</programlisting>
</para>
</example>
</para>
</refsect1>
</refentry>
</reference>
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