doc-zh/reference/mysql/functions/mysql-list-fields.xml at master · php/doc-zh · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 15d88bef8b9082fb92a3753a9e7551f9cf1836d3 Maintainer: dallas Status: ready -->
<!-- CREDITS: mowangjuanzi -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.mysql-list-fields">
 <refnamediv>
  <refname>mysql_list_fields</refname>
  <refpurpose>列出 MySQL 表字段</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
  <warning>
   &mysql.alternative.note.5-4-0;
   <simplelist role="alternatives">
    <member>SQL 查询：<literal>SHOW COLUMNS FROM sometable</literal></member>
   </simplelist>
  </warning>
 </refsynopsisdiv>

 <refsect1 role="description">
  &reftitle.description;
  <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><initializer>NULL</initializer></methodparam>
  </methodsynopsis>
  <simpara>
   检索指定表名的信息。
  </simpara>
  <simpara>
   此函数已弃用。最好使用 <function>mysql_query</function> 发出 SQL <literal>SHOW COLUMNS FROM
   table [LIKE 'name']</literal> 语句代替。
  </simpara>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>database_name</parameter></term>
    <listitem>
     <simpara>
      The name of the database that's being queried.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>table_name</parameter></term>
    <listitem>
     <simpara>
      The name of the table that's being queried.
     </simpara>
    </listitem>
   </varlistentry>
   &mysql.linkid.description;
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <simpara>
   A result pointer <type>resource</type> on success, or &false; on
   failure.
  </simpara>
  <simpara>
   结果指针，可以用于 <function>mysql_field_flags</function>、<function>mysql_field_len</function>、<function>mysql_field_name</function> &listendand;
   <function>mysql_field_type</function>。
  </simpara>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title>替代弃用 <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>
   &example.outputs.similar;
   <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>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <simpara>
    &info.deprecated.alias;
    <function>mysql_listfields</function>
   </simpara>
  </note>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><function>mysql_field_flags</function></member>
   <member><function>mysql_info</function></member>
  </simplelist>
 </refsect1>
</refentry>
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