mirror of
https://github.com/php/doc-ru.git
synced 2026-03-24 15:52:13 +01:00
177 lines
4.7 KiB
XML
177 lines
4.7 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
||
<!-- EN-Revision: 9eb4a46bba05da229be4c8f7a3cb64702e1a2f95 Maintainer: mch Status: ready -->
|
||
<!-- Reviewed: no -->
|
||
<reference xml:id="class.iterator" role="class" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude">
|
||
|
||
<title>Интерфейс Iterator</title>
|
||
<titleabbrev>Iterator</titleabbrev>
|
||
|
||
<partintro>
|
||
|
||
<!-- {{{ Iterator intro -->
|
||
<section xml:id="iterator.intro">
|
||
&reftitle.intro;
|
||
<para>
|
||
Интерфейс для внешних итераторов или объектов, которые умеют
|
||
итерироваться сами, внутренне.
|
||
</para>
|
||
</section>
|
||
<!-- }}} -->
|
||
|
||
<section xml:id="iterator.synopsis">
|
||
&reftitle.interfacesynopsis;
|
||
|
||
<!-- {{{ Synopsis -->
|
||
<classsynopsis class="interface">
|
||
<oointerface>
|
||
<interfacename>Iterator</interfacename>
|
||
</oointerface>
|
||
|
||
<oointerface>
|
||
<modifier>extends</modifier>
|
||
<interfacename>Traversable</interfacename>
|
||
</oointerface>
|
||
|
||
<classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
|
||
<xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.iterator')/db:refentry/db:refsect1[@role='description']/descendant::db:methodsynopsis[@role='Iterator'])">
|
||
<xi:fallback/>
|
||
</xi:include>
|
||
</classsynopsis>
|
||
<!-- }}} -->
|
||
|
||
</section>
|
||
|
||
<section xml:id="iterator.iterators">
|
||
<title>Предопределённые итераторы</title>
|
||
<para>
|
||
PHP уже предоставляет некоторые итераторы для многих ежедневных задач.
|
||
Смотрите список <link linkend="spl.iterators">итераторов SPL</link> для более детальной информации.
|
||
</para>
|
||
</section>
|
||
|
||
<section xml:id="iterator.examples">
|
||
&reftitle.examples;
|
||
<example xml:id="iterator.example.basic"><!-- {{{ -->
|
||
<title>Основы использования</title>
|
||
<para>
|
||
Этот пример демонстрирует в каком порядке вызываются методы, когда
|
||
используется с итератором оператор &foreach;.
|
||
</para>
|
||
<programlisting role="php">
|
||
<![CDATA[
|
||
<?php
|
||
class myIterator implements Iterator {
|
||
private $position = 0;
|
||
private $array = array(
|
||
"firstelement",
|
||
"secondelement",
|
||
"lastelement",
|
||
);
|
||
|
||
public function __construct() {
|
||
$this->position = 0;
|
||
}
|
||
|
||
public function rewind(): void {
|
||
var_dump(__METHOD__);
|
||
$this->position = 0;
|
||
}
|
||
|
||
#[\ReturnTypeWillChange]
|
||
public function current() {
|
||
var_dump(__METHOD__);
|
||
return $this->array[$this->position];
|
||
}
|
||
|
||
#[\ReturnTypeWillChange]
|
||
public function key() {
|
||
var_dump(__METHOD__);
|
||
return $this->position;
|
||
}
|
||
|
||
public function next(): void {
|
||
var_dump(__METHOD__);
|
||
++$this->position;
|
||
}
|
||
|
||
public function valid(): bool {
|
||
var_dump(__METHOD__);
|
||
return isset($this->array[$this->position]);
|
||
}
|
||
}
|
||
|
||
$it = new myIterator;
|
||
|
||
foreach($it as $key => $value) {
|
||
var_dump($key, $value);
|
||
echo "\n";
|
||
}
|
||
?>
|
||
]]>
|
||
</programlisting>
|
||
&example.outputs.similar;
|
||
<screen>
|
||
<![CDATA[
|
||
string(18) "myIterator::rewind"
|
||
string(17) "myIterator::valid"
|
||
string(19) "myIterator::current"
|
||
string(15) "myIterator::key"
|
||
int(0)
|
||
string(12) "firstelement"
|
||
|
||
string(16) "myIterator::next"
|
||
string(17) "myIterator::valid"
|
||
string(19) "myIterator::current"
|
||
string(15) "myIterator::key"
|
||
int(1)
|
||
string(13) "secondelement"
|
||
|
||
string(16) "myIterator::next"
|
||
string(17) "myIterator::valid"
|
||
string(19) "myIterator::current"
|
||
string(15) "myIterator::key"
|
||
int(2)
|
||
string(11) "lastelement"
|
||
|
||
string(16) "myIterator::next"
|
||
string(17) "myIterator::valid"
|
||
]]>
|
||
</screen>
|
||
</example><!-- }}} -->
|
||
</section>
|
||
|
||
<section xml:id="iterator.seealso">
|
||
&reftitle.seealso;
|
||
<para>Смотрите также раздел <link linkend="language.oop5.iterations">Итераторы объектов</link>.</para>
|
||
</section>
|
||
|
||
</partintro>
|
||
|
||
&language.predefined.iterator.current;
|
||
&language.predefined.iterator.key;
|
||
&language.predefined.iterator.next;
|
||
&language.predefined.iterator.rewind;
|
||
&language.predefined.iterator.valid;
|
||
|
||
</reference>
|
||
<!-- 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
|
||
-->
|