php-doc-en/reference/mysql/functions/mysql-select-db.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.mysql-select-db" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>mysql_select_db</refname>
  <refpurpose>Select a MySQL database</refpurpose>
 </refnamediv>

 <refsynopsisdiv role="soft-deprecation-notice">
  <sidebar>
   &mysql.alternative.note;
   <simplelist role="alternatives">
    <member><function>mysqli_select_db</function></member>
    <member><methodname>PDO::__construct</methodname> (part of dsn)</member>
   </simplelist>
  </sidebar>
 </refsynopsisdiv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>mysql_select_db</methodname>
   <methodparam><type>string</type><parameter>database_name</parameter></methodparam>
   <methodparam choice="opt"><type>resource</type><parameter>link_identifier</parameter><initializer>NULL</initializer></methodparam>
  </methodsynopsis>
  <para>
   Sets the current active database on the server that's associated with the 
   specified link identifier. Every subsequent call to 
   <function>mysql_query</function> will be made on the active database.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>database_name</parameter></term>
     <listitem>
      <para>
       The name of the database that is to be selected.
      </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_select_db</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php

$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
    die('Not connected : ' . mysql_error());
}

// make foo the current db
$db_selected = mysql_select_db('foo', $link);
if (!$db_selected) {
    die ('Can\'t use foo : ' . mysql_error());
}
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

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

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

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