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<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>boolean</type><methodname>class_alias</methodname>
   <methodparam choice="opt"><type>string</type><parameter>original</parameter></methodparam>
   <methodparam choice="opt"><type>string</type><parameter>alias</parameter></methodparam>
  </methodsynopsis>
  <para>
   Creates an alias named <parameter>original</parameter>
   base on the 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>
   </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>

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