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  <refentry id="function.mysqli-multi-query">
   <refnamediv>
    <refname>mysqli_multi_query</refname>
    <refname>mysqli->multi_query</refname>
    <refpurpose>Performs a query on the database</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
    <para>Procedural style:</para>
    <methodsynopsis>
     <type>bool</type><methodname>mysqli_multi_query</methodname>
     <methodparam><type>mysqli</type><parameter>link</parameter></methodparam>
     <methodparam><type>string</type><parameter>query</parameter></methodparam>
    </methodsynopsis>
    <para>Object oriented style (method):</para>
    <classsynopsis>
     <ooclass><classname>mysqli</classname></ooclass>
     <methodsynopsis>
      <type>bool</type><methodname>multi_query</methodname>
      <methodparam><type>string</type><parameter>query</parameter></methodparam>
     </methodsynopsis>
    </classsynopsis>
    <para>
     The <function>mysqli_multi_query</function> executes one or multiple queries
     which are concatenated by a semicolon.
    </para>
    <para>
     To retrieve the resultset from the first query you can use 
     <function>mysqli_use_result</function> or <function>mysqli_store_result</function>.
     All subsequent query results can be processed using 
     <function>mysqli_more_results</function> and <function>mysqli_next_result</function>.
    </para>
   </refsect1>
   <refsect1>
    &reftitle.returnvalues;
    <para>
     <function>mysqli_multi_query</function> only returns &false; if the first statement failed. 
     To retrieve subsequent errors from other statements you have to call 
     <function>mysqli_next_result</function> first.
    </para>
   </refsect1>
   <refsect1>
    &reftitle.seealso;
    <para>
     <function>mysqli_use_result</function>,
     <function>mysqli_store_result</function>,
     <function>mysqli_next_result</function>&listendand;
     <function>mysqli_more_results</function>.
    </para>
   </refsect1>
   <refsect1>
    &reftitle.examples;
    <example>
     <title>Object oriented style</title>
     <programlisting role="php">
<![CDATA[
<?php
$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 CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if ($mysqli->multi_query($query)) {
    do {
        /* store first result set */
        if ($result = $mysqli->store_result()) {
            while ($row = $result->fetch_row()) {
                printf("%s\n", $row[0]);
            }
            $result->close();
        }
        /* print divider */
        if ($mysqli->more_results()) {
            printf("-----------------\n");
        }
    } while ($mysqli->next_result());
}

/* close connection */
$mysqli->close();
?>
]]>
    </programlisting>
    </example>
    <example>
     <title>Procedural style</title>
     <programlisting role="php">
<![CDATA[
<?php
$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 CURRENT_USER();";
$query .= "SELECT Name FROM City ORDER BY ID LIMIT 20, 5";

/* execute multi query */
if (mysqli_multi_query($link, $query)) {
    do {
        /* store first result set */
        if ($result = mysqli_store_result($link)) {
            while ($row = mysqli_fetch_row($result)) {
                printf("%s\n", $row[0]);
            }
            mysqli_free_result($result);
        }
        /* print divider */
        if (mysqli_more_results($link)) {
            printf("-----------------\n");
        }
    } while (mysqli_next_result($link));
}

/* close connection */
mysqli_close($link);
?>
]]>
     </programlisting>
    </example>
    &example.outputs;
    <screen>
<![CDATA[
my_user@localhost
-----------------
Amersfoort
Maastricht
Dordrecht
Leiden
Haarlemmermeer
]]>
    </screen>
   </refsect1>
  </refentry>

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