mysql-drop-db.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.mysql-drop-db" xmlns="http://docbook.org/ns/docbook">
   <refnamediv>
    <refname>mysql_drop_db</refname>
    <refpurpose>丢弃（删除）一个 MySQL 数据库</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
  <warning>
   &mysql.alternative.note.4-3-0;
   <simplelist role="alternatives">
    <member>Execute a <literal>DROP DATABASE</literal> query</member>
   </simplelist>
  </warning>
 </refsynopsisdiv>

 <refsect1 role="description">
  &reftitle.description;
     <methodsynopsis>
      <type>bool</type><methodname>mysql_drop_db</methodname>
      <methodparam><type>string</type><parameter>database_name</parameter></methodparam>
      <methodparam choice="opt"><type>resource</type><parameter>
        link_identifier
       </parameter></methodparam>
     </methodsynopsis>
    <para>
     <function>mysql_drop_db</function> 尝试丢弃（删除）指定连接标识所关联的服务器上的一整个数据库。
    </para>
    <para>
     &return.success;
    </para>
    <para>
     为向下兼容也可以用 <function>mysql_dropdb</function>，但反对这样做。
    </para>
    <note>
     <para>
      不提倡使用 <function>mysql_drop_db</function> 函数。最好用
      <function>mysql_query</function> 提交一条
      <literal>SQL DROP DATABASE</literal> 语句来替代。
     </para>
    </note>
    <warning>
     <para>
      如果 MySQL 扩展库是基于 MySQL 4.x 客户端库建立的，则本函数不可用。
     </para>
    </warning>
    <para>
     参见 <function>mysql_create_db</function> 和
     <function>mysql_query</function>。
    </para>
   </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>database_name</parameter></term>
     <listitem>
      <para>
       The name of the database that will be deleted.
      </para>
     </listitem>
    </varlistentry>
    &mysql.linkid.description;
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>
  
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>mysql_drop_db</function> alternative example</title>
    <programlisting role="php">
<![CDATA[
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
    die('Could not connect: ' . mysql_error());
}

$sql = 'DROP DATABASE my_db';
if (mysql_query($sql, $link)) {
    echo "Database my_db was successfully dropped\n";
} else {
    echo 'Error dropping database: ' . mysql_error() . "\n";
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="notes">
  &reftitle.notes;
  <warning>
   <para>
    This function will not be available if the MySQL extension was built 
    against a MySQL 4.x client library.
   </para>
  </warning>
  <note>
   <para>
    &info.deprecated.alias;
    <function>mysql_dropdb</function>
   </para>
  </note>
 </refsect1>

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

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