<?xml version="1.0" encoding="iso-8859-1"?>
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  <refentry id="function.mysql-list-fields">
   <refnamediv>
    <refname>mysql_list_fields</refname>
    <refpurpose>List MySQL table fields</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>resource</type><methodname>mysql_list_fields</methodname>
      <methodparam><type>string</type><parameter>database_name</parameter></methodparam>
      <methodparam><type>string</type><parameter>table_name</parameter></methodparam>
      <methodparam choice="opt"><type>resource</type><parameter>
        link_identifier
       </parameter></methodparam>
     </methodsynopsis>
    <note>
     <para>
      The function <function>mysql_list_fields</function> is deprecated. It
      is preferable to use <function>mysql_query</function> to issue a
      SQL <literal>SHOW COLUMNS FROM table [LIKE 'name']</literal> Statement instead.
     </para>
    </note>
    <para>
     <function>mysql_list_fields</function> retrieves information
     about the given table name. Arguments are the database and
     the table name. A result pointer is returned which can be used
     with <function>mysql_field_flags</function>,
     <function>mysql_field_len</function>,
     <function>mysql_field_name</function>, and
     <function>mysql_field_type</function>.
    </para>
    <para>
     <example>
      <title>Alternate to deprecated <function>mysql_list_fields</function></title>
      <programlisting role="php">
<![CDATA[
<?php
$result = mysql_query("SHOW COLUMNS FROM sometable");
if (!$result) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}
if (mysql_num_rows($result) > 0) {
    while ($row = mysql_fetch_assoc($result)) {
        print_r($row);
    }
}
?>
]]>
      </programlisting>
      <para>
       The above example would produce output similar to:
      </para>
      <screen>
<![CDATA[
Array
(
    [Field] => id
    [Type] => int(7)
    [Null] =>
    [Key] => PRI
    [Default] =>
    [Extra] => auto_increment
)
Array
(
    [Field] => email
    [Type] => varchar(100)
    [Null] =>
    [Key] =>
    [Default] =>
    [Extra] =>
)
]]>
      </screen>
     </example>
    </para>
    <para>
     For downward compatibility <function>mysql_listfields</function>
     can also be used. This is deprecated however.
    </para>
    <para>
     See also
     <function>mysql_field_flags</function> and
     <function>mysql_info</function>.
    </para>
   </refsect1>
  </refentry>

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