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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 1.20 -->
<refentry id="function.pg-put-line">
<refnamediv>
<refname>pg_put_line</refname>
<refpurpose>Send a NULL-terminated string to PostgreSQL backend</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>pg_put_line</methodname>
<methodparam><type>string</type><parameter>data</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>bool</type><methodname>pg_put_line</methodname>
<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
<methodparam><type>string</type><parameter>data</parameter></methodparam>
</methodsynopsis>
<para>
<function>pg_put_line</function> sends a NULL-terminated string
to the PostgreSQL backend server. This is needed in conjunction
with PostgreSQL's <literal>COPY FROM</literal> command.
</para>
<para><literal>COPY</literal> is a high-speed data loading interface
supported by PostgreSQL. Data is passed in without being parsed,
and in a single transaction.
</para>
<para>
An alternative to using raw <function>pg_put_line</function> commands
is to use <function>pg_copy_from</function>. This is a far simpler
interface.
</para>
<note>
<para>
The application must explicitly send the two characters "\."
on the last line to indicate to the backend that it has finished
sending its data, before issuing <function>pg_end_copy</function>.
</para>
</note>
<warning>
<para>
Use of the <function>pg_put_line</function> causes most large object
operations, including <function>pg_lo_read</function> and
<function>pg_lo_tell</function>, to subsequently fail. You can use
<function>pg_copy_from</function> and <function>pg_copy_to</function>
instead.
</para>
</warning>
</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>data</parameter></term>
<listitem>
<para>
A line of text to be sent directly to the PostgreSQL backend. A <literal>NULL</literal>
terminator is added automatically.
</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_put_line</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$conn = pg_pconnect("dbname=foo");
pg_query($conn, "create table bar (a int4, b char(16), d float8)");
pg_query($conn, "copy bar from stdin");
pg_put_line($conn, "3\thello world\t4.5\n");
pg_put_line($conn, "4\tgoodbye world\t7.11\n");
pg_put_line($conn, "\\.\n");
pg_end_copy($conn);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>pg_end_copy</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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