php-doc-en/reference/maxdb/functions/maxdb-num-fields.xml

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1.1.1 $ -->
<refentry id="function.maxdb-num-fields">
<refnamediv>
<refname>maxdb_num_fields</refname>
<refpurpose>
Get the number of fields in a result
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>int</type><methodname>maxdb_num_fields</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
</methodsynopsis>
<para>
<function>maxdb_num_fields</function> returns the number of fields from specified result set.
</para>
</refsect1>
<refsect1>
&reftitle.returnvalues;
<para>The number of fields from a result set</para>
</refsect1>
<refsect1>
&reftitle.seealso;
<para>
<function>maxdb_fetch_field</function>
</para>
</refsect1>
<refsect1>
<title>Example</title>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = maxdb_connect("localhost", "MONA", "RED");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($result = maxdb_query($link, "SELECT * FROM hotel.city ORDER BY zip")) {
/* determine number of fields in result set */
$field_cnt = maxdb_num_fields($result);
printf("Result set has %d fields.\n", $field_cnt);
/* close result set */
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
]]>
</programlisting>
</example>
<para>
The above examples would produce the following output:
</para>
<screen>
<![CDATA[
Result set has 3 fields.
]]>
</screen>
</refsect1>
</refentry>
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