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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.6 -->
<refentry id="function.pg-lo-export">
<refnamediv>
<refname>pg_lo_export</refname>
<refpurpose>Export a large object to file</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>pg_lo_export</methodname>
<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
<methodparam><type>int</type><parameter>oid</parameter></methodparam>
<methodparam><type>string</type><parameter>pathname</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>bool</type><methodname>pg_lo_export</methodname>
<methodparam><type>int</type><parameter>oid</parameter></methodparam>
<methodparam><type>string</type><parameter>pathname</parameter></methodparam>
</methodsynopsis>
<para>
<function>pg_lo_export</function> takes a large object in a
PostgreSQL database and saves its contents to a file on the local
filesystem.
</para>
<para>
To use the large object interface, it is necessary to
enclose it within a transaction block.
</para>
<note>
<para>
This function used to be called <function>pg_loexport</function>.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>connection</parameter></term>
<listitem>
<para>
PostgreSQL database connection resource. When
<parameter>connection</parameter> is not present, the default connection
is used. The default connection is the last connection made by
<function>pg_connect</function> or <function>pg_pconnect</function>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>oid</parameter></term>
<listitem>
<para>
The <varname>OID</varname> of the large object in the database.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>pathname</parameter></term>
<listitem>
<para>
The full path and file name of the file in which to write the
large object on the client filesystem.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>pg_lo_export</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_create($database);
$handle = pg_lo_open($database, $oid, "w");
pg_lo_write($handle, "large object data");
pg_lo_close($handle);
pg_lo_export($database, $oid, '/tmp/lob.dat');
pg_query($database, "commit");
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>pg_lo_import</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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