isinstance.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="reflectionclass.isinstance" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>ReflectionClass::isInstance</refname>
  <refpurpose>Checks class for instance</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis role="ReflectionClass">
   <modifier>public</modifier> <type>bool</type><methodname>ReflectionClass::isInstance</methodname>
   <methodparam><type>object</type><parameter>object</parameter></methodparam>
  </methodsynopsis>
  <para>
   Checks if an object is an instance of a class.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>object</parameter></term>
     <listitem>
      <para>
       The object being compared to.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><methodname>ReflectionClass::isInstance</methodname> related examples</title>
    <programlisting role="php">
<![CDATA[
<?php
// Example usage
$class = new ReflectionClass('Foo');

if ($class->isInstance($arg)) {
    echo "Yes";
}

// Equivalent to
if ($arg instanceof Foo) {
    echo "Yes";
}

// Equivalent to
if (is_a($arg, 'Foo')) {
    echo "Yes";
}
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
Yes
Yes
Yes
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><methodname>ReflectionClass::isInterface</methodname></member>
    <member><link linkend="language.operators.type">Type operators (instanceof)</link></member>
    <member><link linkend="language.oop5.interfaces">Object Interfaces</link></member>
    <member><function>is_a</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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