php-doc-en/reference/maxdb/functions/maxdb-num-fields.xml
2008-06-04 08:18:53 +00:00

132 lines
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XML

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.maxdb-num-fields">
<refnamediv>
<refname>maxdb_num_fields</refname>
<refname>result->field_count</refname>
<refpurpose>Get the number of fields in a result</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<para>Procedural style:</para>
<methodsynopsis>
<type>int</type><methodname>maxdb_num_fields</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (property):</para>
<classsynopsis>
<ooclass><classname>result</classname></ooclass>
<fieldsynopsis><type>int</type><varname>field_count</varname></fieldsynopsis>
</classsynopsis>
<para>
<function>maxdb_num_fields</function> returns the number of fields from specified result set.
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>The number of fields from a result set</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>Object oriented style</title>
<programlisting role="php">
<![CDATA[
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($result = $maxdb->query("SELECT * FROM hotel.city ORDER BY zip")) {
/* determine number of fields in result set */
$field_cnt = $result->field_count;
printf("Result set has %d fields.\n", $field_cnt);
/* close result set */
$result->close();
}
/* close connection */
$maxdb->close();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
if ($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>
&example.outputs.similar;
<screen>
<![CDATA[
Result set has 3 fields.
]]>
</screen>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>maxdb_fetch_field</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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