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archived-doc-ru/reference/reflection/reflectionclass/isinstance.xml
2021-01-17 16:46:04 +03:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: ccded777d9b19740cd6585bdcfc66e3b7695cc4e Maintainer: aur Status: ready -->
<!-- Reviewed: yes -->
<!-- $Revision$ -->
<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>Проверяет, принадлежит ли объект классу</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <type>bool</type><methodname>ReflectionClass::isInstance</methodname>
<methodparam><type>object</type><parameter>object</parameter></methodparam>
</methodsynopsis>
<para>
Проверяет, является ли объект экземпляром класса.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>object</parameter></term>
<listitem>
<para>
Проверяемый объект.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Пример использования <methodname>ReflectionClass::isInstance</methodname> и его аналогов</title>
<programlisting role="php">
<![CDATA[
<?php
// Пример использования
$class = new ReflectionClass('Foo');
if ($class->isInstance($arg)) {
echo "Yes";
}
// Аналогично этому
if ($arg instanceof Foo) {
echo "Yes";
}
// Аналогично этому
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">Операторы проверки типа (instanceof)</link></member>
<member><link linkend="language.oop5.interfaces">Интерфейсы объектов</link></member>
<member><function>is_a</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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