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<?xml version="1.0" encoding="utf-8"?>
<refentry xml:id="pdo-pgsql.lobunlink" xmlns="http://docbook.org/ns/docbook" xmlns:xi="http://www.w3.org/2001/XInclude">
<refnamediv>
<refname>Pdo\Pgsql::lobUnlink</refname>
<refpurpose>Deletes the large object</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="Pdo\\Pgsql">
<modifier>public</modifier> <type>bool</type><methodname>Pdo\Pgsql::lobUnlink</methodname>
<methodparam><type>string</type><parameter>oid</parameter></methodparam>
</methodsynopsis>
<simpara>
Deletes a large object from the database identified by OID.
</simpara>
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('pdo-pgsql.lobcreate')/db:refsect1[@role='description']/db:note/.)">
<xi:fallback/>
</xi:include>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>oid</parameter></term>
<listitem>
<simpara>
A large object identifier.
</simpara>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<simpara>
&return.success;
</simpara>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example xml:id="pdo-pgsql.lobunlink.example.basic">
<title><methodname>Pdo\Pgsql::lobUnlink</methodname> example</title>
<simpara>
This example unlinks a large object from the database prior to deleting
the row that references it from the blobs table are used in the examples of
<methodname>Pdo\Pgsql::lobCreate</methodname> and
<methodname>Pdo\Pgsql::lobOpen</methodname>.
</simpara>
<programlisting role="php">
<![CDATA[
<?php
$db = new PDO('pgsql:dbname=test host=localhost', $user, $pass);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->beginTransaction();
$db->pgsqlLOBUnlink($oid);
$stmt = $db->prepare("DELETE FROM BLOBS where ident = ?");
$stmt->execute(array($some_id));
$db->commit();
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<simplelist>
<member><methodname>Pdo\Pgsql::lobCreate</methodname></member>
<member><methodname>Pdo\Pgsql::lobOpen</methodname></member>
<member><function>pg_lo_create</function></member>
<member><function>pg_lo_open</function></member>
</simplelist>
</refsect1>
</refentry>
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