php-doc-en/reference/classobj/functions/class-alias.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.class-alias" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>class_alias</refname>
  <refpurpose>Creates an alias for a class</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>class_alias</methodname>
   <methodparam><type>string</type><parameter>original</parameter></methodparam>
   <methodparam><type>string</type><parameter>alias</parameter></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>autoload</parameter><initializer>&true;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Creates an alias named <parameter>alias</parameter>
   based on the user defined class <parameter>original</parameter>.
   The aliased class is exactly the same as the original class.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>original</parameter></term>
     <listitem>
      <para>
       The original class.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>alias</parameter></term>
     <listitem>
      <para>
       The alias name for the class.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>autoload</parameter></term>
     <listitem>
      <para>
       Whether do autoload if the original class is not found.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>class_alias</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php

class foo { }

class_alias('foo', 'bar');

$a = new foo;
$b = new bar;

// the objects are the same
var_dump($a == $b, $a === $b);
var_dump($a instanceof $b);

// the classes are the same
var_dump($a instanceof foo);
var_dump($a instanceof bar);

var_dump($b instanceof foo);
var_dump($b instanceof bar);

?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
bool(true)
bool(false)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
]]>
    </screen>
   </example>
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>get_parent_class</function></member>
    <member><function>is_subclass_of</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
-->