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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<refentry id="function.maxdb-fetch-lengths">
<refnamediv>
<refname>maxdb_fetch_lengths</refname>
<refname>result->lengths</refname>
<refpurpose>Returns the lengths of the columns of the current row in the result set</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>array</type><methodname>maxdb_fetch_lengths</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (property):</para>
<classsynopsis>
<ooclass><classname>result</classname></ooclass>
<fieldsynopsis><type>array</type><varname>lengths</varname></fieldsynopsis>
</classsynopsis>
<para>
The <function>maxdb_fetch_lengths</function> function returns an array containing the
lengths of every column of the current row within the result set represented by the
<parameter>result</parameter> parameter. If successful, a numerically indexed array
representing the lengths of each column is returned or &false; on failure.
</para>
</refsect1>
<refsect1>
<title>Return values</title>
<para>
An array of integers representing the size of each column (not including
any terminating null characters). &false; if an error occurred.
</para>
<para>
<function>maxdb_fetch_lengths</function> is valid only for the current row of the result set.
It returns &false; if you call it before calling maxdb_fetch_row/array/resource or after retrieving
all rows in the result.
</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();
}
$query = "SELECT * from hotel.customer WHERE cno = 3000";
if ($result = $maxdb->query($query)) {
$row = $result->fetch_row();
/* display column lengths */
foreach ($result->lengths as $i => $val) {
printf("Field %2d has Length %2d\n", $i+1, $val);
}
$result->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();
}
$query = "SELECT * from hotel.customer WHERE cno = 3000";
if ($result = maxdb_query($link, $query)) {
$row = maxdb_fetch_row($result);
/* display column lengths */
foreach (maxdb_fetch_lengths($result) as $i => $val) {
printf("Field %2d has Length %2d\n", $i+1, $val);
}
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
]]>
</programlisting>
</example>
<para>
The above examples would produce the following output:
</para>
<screen>
<![CDATA[
Field 1 has Length 4
Field 2 has Length 3
Field 3 has Length 5
Field 4 has Length 6
Field 5 has Length 5
Field 6 has Length 21
]]>
</screen>
</refsect1>
</refentry>
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