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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.is-object" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>is_object</refname>
<refpurpose>Finds whether a variable is an object</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>is_object</methodname>
<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
</methodsynopsis>
<para>
Finds whether the given variable is an object.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>value</parameter></term>
<listitem>
<para>
The variable being evaluated.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; if <parameter>value</parameter> is an <type>object</type>,
&false; otherwise.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>7.2.0</entry>
<entry>
<function>is_object</function> now returns &true; for unserialized objects without
a class definition (class of <classname>__PHP_Incomplete_Class</classname>). Previously
&false; was returned.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>is_object</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// Declare a simple function to return an
// array from our object
function get_students($obj)
{
if (!is_object($obj)) {
return false;
}
return $obj->students;
}
// Declare a new class instance and fill up
// some values
$obj = new stdClass();
$obj->students = array('Kalle', 'Ross', 'Felipe');
var_dump(get_students(null));
var_dump(get_students($obj));
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>is_bool</function></member>
<member><function>is_int</function></member>
<member><function>is_float</function></member>
<member><function>is_string</function></member>
<member><function>is_array</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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