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archived-doc-ru/reference/array/functions/array-key-exists.xml
Hannes Magnusson 245266cba8 Upgrade to DocBook5:
- All id attributes are now xml:id
 - Add docbook namespace to all root elements
 - Replace <ulink /> with <link xlink:href />
 - Minor markup fixes here and there
 - Bump EN-Revision where appropriate


git-svn-id: https://svn.php.net/repository/phpdoc/ru/trunk@238337 c90b9560-bf6c-de11-be94-00142212c4b1
2007-06-23 13:31:28 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: 1.5 Maintainer: tronic Status: ready -->
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/array.xml, last change in rev 1.119 -->
<refentry xml:id="function.array-key-exists" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>array_key_exists</refname>
<refpurpose>Проверить, присутствует ли в массиве указанный ключ или индекс</refpurpose>
</refnamediv>
<refsect1>
<title>Описание</title>
<methodsynopsis>
<type>bool</type><methodname>array_key_exists</methodname>
<methodparam><type>mixed</type><parameter>key</parameter></methodparam>
<methodparam><type>array</type><parameter>input</parameter></methodparam>
</methodsynopsis>
<para>
Функция <function>array_key_exists</function> возвращает &true;, если
в массиве присутствует указанное значение <parameter>ключ</parameter>.
Параметр <parameter>ключ</parameter> может быть любым значением,
которое подходит для описания индекса массива.
</para>
<para>
<example>
<title>Пример использования <function>array_key_exists</function></title>
<programlisting role="php">
<![CDATA[
$search_array = array("first" => 1, "second" => 4);
if (array_key_exists("first", $search_array)) {
echo "The 'first' element is in the array";
}
]]>
</programlisting>
</example>
</para>
<note>
<simpara>
В PHP версии 4.0.6 название этой функции - <function>key_exists</function>.
</simpara>
</note>
<para>
См.также <function>isset</function>.
</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:"../../../../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
-->