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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.oci-num-fields" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>oci_num_fields</refname>
<refpurpose>Returns the number of result columns in a statement</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>oci_num_fields</methodname>
<methodparam><type>resource</type><parameter>statement</parameter></methodparam>
</methodsynopsis>
<para>
Gets the number of columns in the given <parameter>statement</parameter>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>statement</parameter></term>
<listitem>
<para>
A valid OCI statement identifier.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the number of columns as an <type>int</type>.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>oci_num_fields</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// Create the table with:
// CREATE TABLE mytab (id NUMBER, quantity NUMBER);
$conn = oci_connect("hr", "hrpwd", "localhost/XE");
if (!$conn) {
$m = oci_error();
trigger_error(htmlentities($m['message']), E_USER_ERROR);
}
$stid = oci_parse($conn, "SELECT * FROM mytab");
oci_execute($stid, OCI_DESCRIBE_ONLY); // Use OCI_DESCRIBE_ONLY if not fetching rows
$ncols = oci_num_fields($stid);
for ($i = 1; $i <= $ncols; $i++) {
echo oci_field_name($stid, $i) . " " . oci_field_type($stid, $i) . "<br>\n";
}
// Outputs:
// ID NUMBER
// QUANTITY NUMBER
oci_free_statement($stid);
oci_close($conn);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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