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<?xml version='1.0' encoding="utf-8"?>
<!-- $Revision: 297078 $ -->
<section xml:id="pdo-mysql.constants" xmlns="http://docbook.org/ns/docbook">
&reftitle.constants;
&pdo.driver-constants;
<variablelist>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_USE_BUFFERED_QUERY</constant>
(<type>integer</type>)
</term>
<listitem>
<simpara>
If this attribute is set to &true; on a
<classname>PDOStatement</classname>, the MySQL driver will use the
buffered versions of the MySQL API. If you're writing portable code, you
should use <function>PDOStatement::fetchAll</function> instead.
</simpara>
<para>
<example><title>Forcing queries to be buffered in mysql</title>
<programlisting role='php'>
<![CDATA[
<?php
if ($db->getAttribute(PDO::ATTR_DRIVER_NAME) == 'mysql') {
$stmt = $db->prepare('select * from foo',
array(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true));
} else {
die("my application only works with mysql; I should use \$stmt->fetchAll() instead");
}
?>
]]>
</programlisting>
</example>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_LOCAL_INFILE</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Enable <literal>LOAD LOCAL INFILE</literal>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_INIT_COMMAND</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Command to execute when connecting to the MySQL server. Will
automatically be re-executed when reconnecting.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_READ_DEFAULT_FILE</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Read options from the named option file instead of from
<filename>my.cnf</filename>. This option is not available if
mysqlnd is used, because mysqlnd does not read the mysql
configuration files.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_READ_DEFAULT_GROUP</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Read options from the named group from <filename>my.cnf</filename> or the
file specified with <constant>MYSQL_READ_DEFAULT_FILE</constant>. This option
is not available if mysqlnd is used, because mysqlnd does not read the mysql
configuration files.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_MAX_BUFFER_SIZE</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Maximum buffer size. Defaults to 1 MiB.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<constant>PDO::MYSQL_ATTR_DIRECT_QUERY</constant>
(<type>integer</type>)
</term>
<listitem>
<para>
Perform direct queries, don't use prepared statements.
</para>
</listitem>
</varlistentry>
</variablelist>
</section>
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-->
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