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php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>mysql_list_dbs</H1
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><P
>    (PHP 3, PHP 4, PHP 5)</P
>mysql_list_dbs&nbsp;--&nbsp;
     列出 MySQL 服务器中所有的数据库
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN136003"
></A
><H2
>说明</H2
>resource <B
CLASS="methodname"
>mysql_list_dbs</B
> ( [resource link_identifier] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>mysql_list_dbs()</B
> 将返回一个结果指针,包含了当前
     MySQL 进程中所有可用的数据库。用
     <A
HREF="function.mysql-tablename.html"
><B
CLASS="function"
>mysql_tablename()</B
></A
>
     函数来遍历此结果指针,或者任何使用结果表的函数,例如
     <A
HREF="function.mysql-fetch-array.html"
><B
CLASS="function"
>mysql_fetch_array()</B
></A
>。
    </P
><P
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><P
><B
>例 1. <B
CLASS="function"
>mysql_list_dbs()</B
> 例子</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">mysql_connect</font><font color="#007700">(</font><font color="#DD0000">'localhost'</font><font color="#007700">, </font><font color="#DD0000">'mysql_user'</font><font color="#007700">, </font><font color="#DD0000">'mysql_password'</font><font color="#007700">);<br /></font><font color="#0000BB">$db_list </font><font color="#007700">= </font><font color="#0000BB">mysql_list_dbs</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /><br />while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">mysql_fetch_object</font><font color="#007700">(</font><font color="#0000BB">$db_list</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#0000BB">$row</font><font color="#007700">-&gt;</font><font color="#0000BB">Database </font><font color="#007700">. </font><font color="#DD0000">"\n"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>&#13;       以上例子将产生如下输出:
      </P
><TABLE
BORDER="0"
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><TD
><PRE
CLASS="screen"
>database1
database2
database3
...</PRE
></TD
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>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      以上代码用起来和
      <A
HREF="function.mysql-fetch-row.html"
><B
CLASS="function"
>mysql_fetch_row()</B
></A
>
      或类似函数一样简单。
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     为向下兼容仍然可以使用
     <B
CLASS="function"
>mysql_listdbs()</B
>,但反对这样做。
    </P
><P
>&#13;     参见 <A
HREF="function.mysql-db-name.html"
><B
CLASS="function"
>mysql_db_name()</B
></A
>。
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