<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<refentry xml:id="mysqlnduhconnection.queryreadresultsetheader" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>MysqlndUhConnection::queryReadResultsetHeader</refname>
  <refpurpose>Read a result set header</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>bool</type><methodname>MysqlndUhConnection::queryReadResultsetHeader</methodname>
   <methodparam><type>mysqlnd_connection</type><parameter>connection</parameter></methodparam>
   <methodparam><type>mysqlnd_statement</type><parameter>mysqlnd_stmt</parameter></methodparam>
  </methodsynopsis>
  <para>
   Read a result set header.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>connection</parameter></term>
    <listitem>
     <para>
      Mysqlnd connection handle. Do not modify!
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>mysqlnd_stmt</parameter></term>
    <listitem>
     <para>
      Mysqlnd statement handle. Do not modify!
      Set to &null;, if function
      is not used in the context of a prepared statement.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; on success.
   Otherwise, returns &false;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>MysqlndUhConnection::queryReadResultsetHeader</function> example</title>
        <programlisting role="php">
<![CDATA[
<?php
class proxy extends MysqlndUhConnection {
 public function queryReadResultsetHeader($res, $stmt) {
  printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
  $ret = parent::queryReadResultsetHeader($res, $stmt);
  printf("%s returns %s\n", __METHOD__, var_export($ret, true));
  return $ret;
 }
}
mysqlnd_uh_set_connection_proxy(new proxy());

$mysqli = new mysqli("localhost", "root", "", "test");
$res = $mysqli->query("SELECT 'Welcome mysqlnd_uh!' FROM DUAL");
var_dump($res->fetch_assoc());
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
proxy::queryReadResultsetHeader(array (
  0 => NULL,
  1 => NULL,
))
proxy::queryReadResultsetHeader returns true
array(1) {
  ["Welcome mysqlnd_uh!"]=>
  string(19) "Welcome mysqlnd_uh!"
}
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member>
     <function>mysqlnd_uh_set_connection_proxy</function>
    </member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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