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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 330543 $ -->
<refentry xml:id="pdostatement.nextrowset" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>PDOStatement::nextRowset</refname>
<refpurpose>
Advances to the next rowset in a multi-rowset statement handle
</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>bool</type><methodname>PDOStatement::nextRowset</methodname>
<void/>
</methodsynopsis>
<para>
Some database servers support stored procedures that return more than one
rowset (also known as a result set).
<function>PDOStatement::nextRowset</function> enables you to access the
second and subsequent rowsets associated with a PDOStatement object. Each
rowset can have a different set of columns from the preceding rowset.
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Fetching multiple rowsets returned from a stored procedure</title>
<para>
The following example shows how to call a stored procedure,
MULTIPLE_ROWSETS, that returns three rowsets. We use a do / while loop to
loop over the <function>PDOStatement::nextRowset</function> method, which
returns false and terminates the loop when no more rowsets can be returned.
</para>
<programlisting role="php">
<![CDATA[
<?php
$sql = 'CALL multiple_rowsets()';
$stmt = $conn->query($sql);
$i = 1;
do {
$rowset = $stmt->fetchAll(PDO::FETCH_NUM);
if ($rowset) {
printResultSet($rowset, $i);
}
$i++;
} while ($stmt->nextRowset());
function printResultSet(&$rowset, $i) {
print "Result set $i:\n";
foreach ($rowset as $row) {
foreach ($row as $col) {
print $col . "\t";
}
print "\n";
}
print "\n";
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Result set 1:
apple red
banana yellow
Result set 2:
orange orange 150
banana yellow 175
Result set 3:
lime green
apple red
banana yellow
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>PDOStatement::columnCount</function></member>
<member><function>PDOStatement::execute</function></member>
<member><function>PDOStatement::getColumnMeta</function></member>
<member><function>PDO::query</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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