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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.8 $ -->
<refentry id="function.mysqli-info">
<refnamediv>
<refname>mysqli_info</refname>
<refname>mysqli->info</refname>
<refpurpose>Retrieves information about the most recently executed query</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>string</type><methodname>mysqli_info</methodname>
<methodparam><type>mysqli</type><parameter>link</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (property)</para>
<classsynopsis>
<ooclass><classname>mysqli</classname></ooclass>
<fieldsynopsis><type>string</type><varname>info</varname></fieldsynopsis>
</classsynopsis>
<para>
The <function>mysqli_info</function> function returns a string providing
information about the last query executed. The nature of this string is
provided below:
</para>
<para>
<table>
<title>Possible mysqli_info return values</title>
<tgroup cols='2'>
<thead>
<row>
<entry>Query type</entry>
<entry>Example result string</entry>
</row>
</thead>
<tbody>
<row>
<entry>INSERT INTO...SELECT...</entry>
<entry>Records: 100 Duplicates: 0 Warnings: 0</entry>
</row>
<row>
<entry>INSERT INTO...VALUES (...),(...),(...)</entry>
<entry>Records: 3 Duplicates: 0 Warnings: 0</entry>
</row>
<row>
<entry>LOAD DATA INFILE ...</entry>
<entry>Records: 1 Deleted: 0 Skipped: 0 Warnings: 0</entry>
</row>
<row>
<entry>ALTER TABLE ...</entry>
<entry>Records: 3 Duplicates: 0 Warnings: 0</entry>
</row>
<row>
<entry>UPDATE ...</entry>
<entry>Rows matched: 40 Changed: 40 Warnings: 0</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
<note>
<para>
Queries which do not fall into one of the above formats are not supported.
In these situations, <function>mysqli_info</function> will return an empty string.
</para>
</note>
</refsect1>
<refsect1>
&reftitle.returnvalues;
<para>
A character string representing additional information about the most recently executed query.
</para>
</refsect1>
<refsect1>
&reftitle.seealso;
<para>
<function>mysqli_affected_rows</function>,
<function>mysqli_warning_count</function>&listendand;
<function>mysqli_num_rows</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();
}
$mysqli->query("CREATE TEMPORARY TABLE t1 LIKE City");
/* INSERT INTO .. SELECT */
$mysqli->query("INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n", $mysqli->info);
/* close connection */
$mysqli->close();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
mysqli_query($link, "CREATE TEMPORARY TABLE t1 LIKE City");
/* INSERT INTO .. SELECT */
mysqli_query($link, "INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n", mysqli_info($link));
/* close connection */
mysqli_close($link);
?>
]]>
</programlisting>
</example>
&example.outputs;
<screen>
<![CDATA[
Records: 150 Duplicates: 0 Warnings: 0
]]>
</screen>
</refsect1>
</refentry>
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