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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xml:id="function.fbsql-fetch-field" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>fbsql_fetch_field</refname>
<refpurpose>Get column information from a result and return as an object</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>object</type><methodname>fbsql_fetch_field</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>field_offset</parameter></methodparam>
</methodsynopsis>
<para>
Used in order to obtain information about fields in a certain query result.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
&fbsql.result.description;
<varlistentry>
<term><parameter>field_offset</parameter></term>
<listitem>
<para>
The numerical offset of the field. The field index starts at 0.
If not specified, the next field that wasn't yet retrieved by
<function>fbsql_fetch_field</function> is retrieved.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an object containing field information, or &false; on errors.
</para>
<para>
The properties of the object are:
<itemizedlist>
<listitem>
<simpara>
name - column name
</simpara>
</listitem>
<listitem>
<simpara>
table - name of the table the column belongs to
</simpara>
</listitem>
<listitem>
<simpara>
max_length - maximum length of the column
</simpara>
</listitem>
<listitem>
<simpara>
not_null - 1 if the column cannot be &null;
</simpara>
</listitem>
<listitem>
<simpara>
type - the type of the column
</simpara>
</listitem>
</itemizedlist>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>fbsql_fetch_field</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
fbsql_connect($host, $user, $password)
or die("Could not connect");
$result = fbsql_db_query("database", "select * from table")
or die("Query failed");
# get column metadata
$i = 0;
while ($i < fbsql_num_fields($result)) {
echo "Information for column $i:<br />\n";
$meta = fbsql_fetch_field($result);
if (!$meta) {
echo "No information available<br />\n";
}
echo "<pre>
max_length: $meta->max_length
name: $meta->name
not_null: $meta->not_null
table: $meta->table
type: $meta->type
</pre>";
$i++;
}
fbsql_free_result($result);
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>fbsql_field_seek</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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