<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.10 $ -->
<!-- splitted from ./en/functions/mysql.xml, last change in rev 1.2 -->
  <refentry id="function.mysql-field-name">
   <refnamediv>
    <refname>mysql_field_name</refname>
    <refpurpose>
     Get the name of the specified field in a result
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>string</type><methodname>mysql_field_name</methodname>
      <methodparam><type>resource</type><parameter>result</parameter></methodparam>
      <methodparam><type>int</type><parameter>field_index</parameter></methodparam>
     </methodsynopsis>
    <para>
     <function>mysql_field_name</function> returns the name of the
     specified field index. <parameter>result</parameter> must be a
     valid result identifier and <parameter>field_index</parameter> is
     the numerical offset of the field.
    </para>
    <note>
     <para>
      <parameter>field_index</parameter> starts at 0.
     </para>
     <para>
      e.g. The index of the third field would actually be 2, the index
      of the fourth field would be 3 and so on.
     </para>
    </note>
    &database.field-case;
    <para>
     <example>
      <title><function>mysql_field_name</function> example</title>
      <programlisting role="php">
<![CDATA[
<?php
/* The users table consists of three fields:
 *   user_id
 *   username
 *   password.
 */
$link = @mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
    die('Could not connect to MySQL server: ' . mysql_error());
}
$dbname = 'mydb';
$db_selected = mysql_select_db($dbname, $link);
if (!$db_selected) {
    die('Could not set $dbname: ' . mysql_error());
}
$res = mysql_query('select * from users', $link);

echo mysql_field_name($res, 0) . "\n";
echo mysql_field_name($res, 2);
?>
]]>
      </programlisting>
      <para>
       The above example would produce the following output:
      </para>
      <screen>
<![CDATA[
user_id
password
]]>
      </screen>
     </example>
    </para>
    <para>
     For downwards compatibility <function>mysql_fieldname</function>
     can also be used. This is deprecated, however.
    </para>
   </refsect1>
  </refentry>

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