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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<refentry id="function.maxdb-stmt-affected-rows">
<refnamediv>
<refname>maxdb_stmt_affected_rows</refname>
<refname>maxdb_stmt->affected_rows</refname>
<refpurpose>Returns the total number of rows changed, deleted, or
inserted by the last executed statement
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style :</para>
<methodsynopsis>
<type>mixed</type><methodname>maxdb_stmt_affected_rows</methodname>
<methodparam><type>resource</type><parameter>stmt</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (property):</para>
<classsynopsis>
<ooclass><classname>stmt</classname></ooclass>
<fieldsynopsis><type>mixed</type><varname>affected_rows</varname></fieldsynopsis>
</classsynopsis>
<para>
<function>maxdb_stmt_affected_rows</function> returns the number of rows affected
by INSERT, UPDATE, or DELETE query. If the last query was invalid or the
number of rows can not determined, this function will return -1.
</para>
</refsect1>
<refsect1>
<title>Return Values</title>
<para>
An integer greater than zero indicates the number of rows affected or retrieved.
Zero indicates that no records where updated for an UPDATE/DELETE statement, no
rows matched the WHERE clause in the query or that no query has yet been executed.
-1 indicates that the query has returned an error or the number of rows can not determined.
</para>
</refsect1>
<refsect1>
<title>See also</title>
<para>
<function>maxdb_stmt_num_rows</function>,
<function>maxdb_prepare</function>
</para>
</refsect1>
<refsect1>
<title>Example</title>
<example>
<title>Object oriented style</title>
<programlisting role="php">
<![CDATA[
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* create temp table */
$maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");
$query = "INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?";
/* prepare statement */
if ($stmt = $maxdb->prepare($query)) {
/* Bind variable for placeholder */
$code = 'N%';
$stmt->bind_param("s", $code);
/* execute statement */
$stmt->execute();
printf("rows inserted: %d\n", $stmt->affected_rows);
/* close statement */
$stmt->close();
}
/* close connection */
$maxdb->close();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* create temp table */
maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
$query = "INSERT INTO temp.mycity SELECT * FROM hotel.city WHERE state LIKE ?";
/* prepare statement */
if ($stmt = maxdb_prepare($link, $query)) {
/* Bind variable for placeholder */
$code = 'N%';
maxdb_stmt_bind_param($stmt, "s", $code);
/* execute statement */
maxdb_stmt_execute($stmt);
printf("rows inserted: %d\n", maxdb_stmt_affected_rows($stmt));
/* close statement */
maxdb_stmt_close($stmt);
}
/* close connection */
maxdb_close($link);
?>
]]>
</programlisting>
</example>
<para>
The above examples would produce the following output:
</para>
<screen>
<![CDATA[
rows inserted: 4
]]>
</screen>
</refsect1>
</refentry>
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