php-doc-en/reference/pgsql/functions/pg-lo-read-all.xml
Daniel Egeberg 96c9d88bad Converted to utf-8
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
2010-03-28 22:10:10 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.2 -->
<refentry xml:id="function.pg-lo-read-all" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>pg_lo_read_all</refname>
<refpurpose>
Reads an entire large object and send straight to browser
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>pg_lo_read_all</methodname>
<methodparam><type>resource</type><parameter>large_object</parameter></methodparam>
</methodsynopsis>
<para>
<function>pg_lo_read_all</function> reads a large object and passes
it straight through to the browser after sending all pending
headers. Mainly intended for sending binary data like images or
sound.
</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_loreadall</function>.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>large_object</parameter></term>
<listitem>
<para>
PostgreSQL large object (LOB) resource, returned by <function>pg_lo_open</function>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Number of bytes read or &false; on error.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>pg_lo_read_all</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
header('Content-type: image/jpeg');
$image_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $image_oid, "r");
pg_lo_read_all($handle);
pg_query($database, "commit");
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>pg_lo_read</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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