php-doc-en/reference/cubrid/functions/cubrid-num-cols.xml
2010-09-08 01:27:51 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.cubrid-num-cols" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>cubrid_num_cols</refname>
<refpurpose>Is used to get the number of columns</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>cubrid_num_cols</methodname>
<methodparam><type>resource</type><parameter>req_identifier</parameter></methodparam>
</methodsynopsis>
<para>
The <function>cubrid_num_cols</function> function is used to get the number of columns from the query result. It can only be used when the query executed is a select sentence.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>req_identifier</parameter></term>
<listitem><para>Request identifier.</para></listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Number of columns, when process is successful.
</para>
<para>
-1, if SQL sentence is not SELECT.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title><function>cubrid_num_cols</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$req = cubrid_execute ($con, "select * from member");
if ($req) {
$rows_count = cubrid_num_rows ($req);
$cols_count = cubrid_num_cols ($req);
echo "result set rows count : $rows\n";
echo "result set columns count : $cols\n";
cubrid_close_request ($req);
}
?>
]]>
</programlisting>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>cubrid_execute</function></member>
<member><function>cubrid_num_rows</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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