mysql-fetch-array.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 4754397753fd79f1c846868b66a2448babab1c54 Maintainer: HonestQiao Status: ready -->
<refentry xml:id="function.mysql-fetch-array" xmlns="http://docbook.org/ns/docbook">
   <refnamediv>
    <refname>mysql_fetch_array</refname>
    <refpurpose> 从结果集中取得一行作为关联数组</refpurpose>
   </refnamediv>
  <refsect1 role="description">
    &reftitle.description;
     <methodsynopsis>
      <type>array</type><methodname>mysql_fetch_array</methodname>
      <methodparam><type>resource</type><parameter>result</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>result_type</parameter></methodparam>
     </methodsynopsis>
    <para>
     <function>mysql_fetch_array</function> 是
     <function>mysql_fetch_row</function>
     的扩展版本。除了将数据以数字索引方式储存在数组中之外，还可以将数据作为关联索引储存，用字段名作为键名。
    </para>
    <para>
     有一点很重要必须指出，用
     <function>mysql_fetch_array</function> 并<emphasis>不明显</emphasis> 比用
     <function>mysql_fetch_row</function> 慢，而且还提供了明显更多的值。
    </para>
  </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &mysql.result.description;
    <varlistentry>
     <term><parameter>result_type</parameter></term>
     <listitem>
      <para>
        接受以下常量值：
        <constant>MSQL_ASSOC</constant>，<constant>MSQL_NUM</constant> 和
        <constant>MSQL_BOTH</constant>，默认为 <constant>MSQL_BOTH</constant>。如果用了
        MYSQL_BOTH，将得到一个同时包含关联和数字索引的数组。用
        MYSQL_ASSOC 只得到关联索引（如同 <function>mysql_fetch_assoc</function> 那样），用
        MYSQL_NUM 只得到数字索引（如同 <function>mysql_fetch_row</function> 那样）。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
    返回根据从结果集取得的行生成的数组，如果没有更多行则返回 &false;。
  </para>
 </refsect1>
 <refsect1 role="examples">
  &reftitle.examples;
  <para>    
     <example>
      <title><function>msql_fetch_array</function> 示例</title>
    <programlisting role="php">
<![CDATA[
<?php
$con = msql_connect();
if (!$con) {
    die('Server connection problem: ' . msql_error());
}

if (!msql_select_db('test', $con)) {
    die('Database connection problem: ' . msql_error());
}

$result = msql_query('SELECT id, name FROM people', $con);
if (!$result) {
    die('Query execution problem: ' . msql_error());
}

while ($row = msql_fetch_array($result, MSQL_ASSOC)) {
    echo $row['id'] . ': ' . $row['name'] . "\n";
}

msql_free_result($result);
?>
]]>
      </programlisting>
     </example>
    </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>msql_fetch_row</function></member>
    <member><function>msql_fetch_object</function></member>
    <member><function>msql_data_seek</function></member>
    <member><function>msql_result</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->