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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 299161 $ -->
<refentry xml:id="mysqli-stmt.store-result" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>mysqli_stmt::store_result</refname>
<refname>mysqli_stmt_store_result</refname>
<refpurpose>Transfers a result set from a prepared statement</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>&style.oop;</para>
<methodsynopsis>
<type>bool</type><methodname>mysqli_stmt::store_result</methodname>
<void />
</methodsynopsis>
<para>&style.procedural;</para>
<methodsynopsis>
<type>bool</type><methodname>mysqli_stmt_store_result</methodname>
<methodparam><type>mysqli_stmt</type><parameter>stmt</parameter></methodparam>
</methodsynopsis>
<para>
You must call <function>mysqli_stmt_store_result</function> for every query that
successfully produces a result set (<literal>SELECT, SHOW, DESCRIBE, EXPLAIN</literal>),
and only if you want to buffer the complete result set by the client,
so that the subsequent <function>mysqli_stmt_fetch</function> call returns buffered data.
</para>
<note>
<para>
It is unnecessary to call <function>mysqli_stmt_store_result</function> for other queries,
but if you do, it will not harm or cause any notable performance in all cases.
You can detect whether the query produced a result set by checking if
<function>mysqli_stmt_result_metadata</function> returns NULL.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
&mysqli.stmt.description;
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<para>&style.oop;</para>
<programlisting role="php">
<![CDATA[
<?php
/* Open a connection */
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
if ($stmt = $mysqli->prepare($query)) {
/* execute query */
$stmt->execute();
/* store result */
$stmt->store_result();
printf("Number of rows: %d.\n", $stmt->num_rows);
/* free result */
$stmt->free_result();
/* close statement */
$stmt->close();
}
/* close connection */
$mysqli->close();
?>
]]>
</programlisting>
<para>&style.procedural;</para>
<programlisting role="php">
<![CDATA[
<?php
/* Open a connection */
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER BY Name LIMIT 20";
if ($stmt = mysqli_prepare($link, $query)) {
/* execute query */
mysqli_stmt_execute($stmt);
/* store result */
mysqli_stmt_store_result($stmt);
printf("Number of rows: %d.\n", mysqli_stmt_num_rows($stmt));
/* free result */
mysqli_stmt_free_result($stmt);
/* close statement */
mysqli_stmt_close($stmt);
}
/* close connection */
mysqli_close($link);
?>
]]>
</programlisting>
&examples.outputs;
<screen>
<![CDATA[
Number of rows: 20.
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>mysqli_prepare</function></member>
<member><function>mysqli_stmt_result_metadata</function></member>
<member><function>mysqli_stmt_fetch</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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