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class-exists.xml
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class-exists.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: 42bd1bfed391b287e55e47fed1b8f8d22a033ee0 Maintainer: nilgun Status: ready -->
<refentry xml:id="function.class-exists" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>class_exists</refname>
<refpurpose>Sınıf tanımlı mı diye bakar</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>class_exists</methodname>
<methodparam><type>string</type><parameter>sınıf</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>otomatik_yükle</parameter><initializer>&true;</initializer></methodparam>
</methodsynopsis>
<para>
Bu işlev belirtilen sınıfın tanımlı olup olmadığına bakar.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>sınıf</parameter></term>
<listitem>
<para>
Sınıf ismi. İsim eşleştirilirken harf büyüklüğü dikkate alınmaz.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>otomatik_yükle</parameter></term>
<listitem>
<para>
Yüklü değilse <link linkend="language.oop5.autoload">autoload</link> çağrısı yapılıp yapılmayacağı.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
<parameter>sınıf</parameter> tanımlı bir sınıfın ismi ise &true;, aksi
takdirde &false; döner.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>- <function>class_exists</function> örneği</title>
<programlisting role="php">
<![CDATA[
<?php
// Kullanmayı denemeden önce böyle bir sınıf var mı diye bak
if (class_exists('MyClass')) {
$myclass = new MyClass();
}
?>
]]>
</programlisting>
</example>
<example>
<title>- <parameter>autoload</parameter> bağımsız değişken örneği</title>
<programlisting role="php">
<![CDATA[
<?php
spl_autoload_register(function ($class_name) {
include $class_name . '.php';
// Check to see whether the include declared the class
if (!class_exists($class_name, false)) {
throw new LogicException("Unable to load class: $class_name");
}
});
+if (class_exists(MyClass::class)) {
$myclass = new MyClass();
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>function_exists</function></member>
<member><function>enum_exists</function></member>
<member><function>interface_exists</function></member>
<member><function>get_declared_classes</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
-->