mirror of
https://github.com/sigmasternchen/php-doc-en
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96c9d88bad
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
113 lines
2.8 KiB
XML
113 lines
2.8 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.ifx-affected-rows" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>ifx_affected_rows</refname>
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<refpurpose>Get number of rows affected by a query</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>int</type><methodname>ifx_affected_rows</methodname>
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<methodparam><type>resource</type><parameter>result_id</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the number of rows affected by a query associated with
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<parameter>result_id</parameter>.
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</para>
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<para>
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For inserts, updates and deletes the number is the real number
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(sqlerrd[2]) of affected rows. For selects it is an estimate
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(sqlerrd[0]). Don't rely on it. The database server can never
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return the actual number of rows that will be returned by a
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SELECT because it has not even begun fetching them at this stage
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(just after the "PREPARE" when the optimizer has determined the
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query plan).
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</para>
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<para>
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Useful after <function>ifx_prepare</function> to limit queries to
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reasonable result sets.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>result_id</parameter></term>
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<listitem>
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<para>
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A valid result id returned by <function>ifx_query</function> or
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<function>ifx_prepare</function>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns the number of rows as an integer.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Informix affected rows</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$rid = ifx_prepare("select * from emp
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where name like " . $name, $connid);
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if (! $rid) {
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/* ... error ... */
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}
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$rowcount = ifx_affected_rows($rid);
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if ($rowcount > 1000) {
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printf ("Too many rows in result set (%d)\n<br />", $rowcount);
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die ("Please restrict your query<br />\n");
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>ifx_num_rows</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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