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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- splitted from ./en/functions/pgsql.xml, last change in rev 1.61 -->
<refentry xml:id='function.pg-cancel-query' xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>pg_cancel_query</refname>
<refpurpose>
Cancel an asynchronous query
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>pg_cancel_query</methodname>
<methodparam><type>PgSql\Connection</type><parameter>connection</parameter></methodparam>
</methodsynopsis>
<para>
<function>pg_cancel_query</function> cancels an asynchronous query sent with
<function>pg_send_query</function>, <function>pg_send_query_params</function>
or <function>pg_send_execute</function>. You cannot cancel a query executed using
<function>pg_query</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>connection</parameter></term>
<listitem>
&pgsql.parameter.connection;
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
&pgsql.changelog.connection-object;
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>pg_cancel_query</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$dbconn = pg_connect("dbname=publisher") or die("Could not connect");
if (!pg_connection_busy($dbconn)) {
pg_send_query($dbconn, "select * from authors; select count(*) from authors;");
}
$res1 = pg_get_result($dbconn);
echo "First call to pg_get_result(): $res1\n";
$rows1 = pg_num_rows($res1);
echo "$res1 has $rows1 records\n\n";
// Cancel the currently running query. Will be the second query if it is
// still running.
pg_cancel_query($dbconn);
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
First call to pg_get_result(): Resource id #3
Resource id #3 has 3 records
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>pg_send_query</function></member>
<member><function>pg_connection_busy</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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mode: sgml
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sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
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indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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End:
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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