mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-21 03:18:55 +00:00
5b9fc29465
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@78496 c90b9560-bf6c-de11-be94-00142212c4b1
79 lines
2.4 KiB
XML
79 lines
2.4 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!-- $Revision: 1.2 $ -->
|
|
<!-- splitted from ./en/functions/ifx.xml, last change in rev 1.2 -->
|
|
<refentry id="function.ifx-affected-rows">
|
|
<refnamediv>
|
|
<refname>ifx_affected_rows</refname>
|
|
<refpurpose>Get number of rows affected by a query</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<methodsynopsis>
|
|
<type>int</type><methodname>ifx_affected_rows</methodname>
|
|
<methodparam><type>int</type><parameter>result_id</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
<parameter>result_id</parameter> is a valid result id returned by
|
|
<function>ifx_query</function> or
|
|
<function>ifx_prepare</function>.
|
|
</para>
|
|
<para>
|
|
Returns the number of rows affected by a query associated with
|
|
<parameter>result_id</parameter>.
|
|
</para>
|
|
<para>
|
|
For inserts, updates and deletes the number is the real number
|
|
(sqlerrd[2]) of affected rows. For selects it is an estimate
|
|
(sqlerrd[0]). Don't rely on it. The database server can never
|
|
return the actual number of rows that will be returned by a
|
|
SELECT because it has not even begun fetching them at this stage
|
|
(just after the "PREPARE" when the optimizer has determined the
|
|
query plan).
|
|
</para>
|
|
<para>
|
|
Useful after <function>ifx_prepare</function> to limit queries to
|
|
reasonable result sets.
|
|
</para>
|
|
<para>
|
|
See also: <function>ifx_num_rows</function>
|
|
</para>
|
|
<example>
|
|
<title>Informix affected rows</title>
|
|
<programlisting role="php">
|
|
<![CDATA[
|
|
$rid = ifx_prepare ("select * from emp
|
|
where name like " . $name, $connid);
|
|
if (! $rid) {
|
|
... error ...
|
|
}
|
|
$rowcount = ifx_affected_rows ($rid);
|
|
if ($rowcount > 1000) {
|
|
printf ("Too many rows in result set (%d)\n<br>", $rowcount);
|
|
die ("Please restrict your query<br>\n");
|
|
}
|
|
]]>
|
|
</programlisting>
|
|
</example>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|