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131 lines
3.4 KiB
XML
131 lines
3.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- EN-Revision: 9b1673cf114a1e10c4563ab9223cb56aed552b89 Maintainer: rjhdby Status: ready -->
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<!-- Reviewed: no -->
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<refentry xml:id="reflectionparameter.iscallable" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>ReflectionParameter::isCallable</refname>
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<refpurpose>Проверяет, объявили ли тип параметра как callable</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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&warn.deprecated.function-8-0-0;
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<para>
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Пример на этой странице показывает альтернативный способ, которым получают эту информацию.
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</para>
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</refsynopsisdiv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis role="ReflectionParameter">
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<modifier role="attribute">#[\Deprecated]</modifier>
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<modifier>public</modifier> <type>bool</type><methodname>ReflectionParameter::isCallable</methodname>
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<void/>
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</methodsynopsis>
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<para>
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</para>
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&warn.undocumented.func;
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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&no.function.parameters;
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Метод возвращает &true;, если тип параметра <type>callable</type>, иначе возвращает &false;.
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Метод вернёт &null;, если возникла ошибка.
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</para>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>8.0.0</entry>
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<entry>
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Метод устарел в пользу метода
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<methodname>ReflectionParameter::getType</methodname>.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Пример альтернативного способа получить информацию о принадлежности параметра типу callable для PHP 8.0.0</title>
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<para>
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Начиная с PHP 8.0.0 следующий код сообщит, поддерживает ли параметр тип callable,
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в том числе как часть объединения.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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function declaresCallable(ReflectionParameter $reflectionParameter): bool
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{
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$reflectionType = $reflectionParameter->getType();
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if (!$reflectionType) {
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return false;
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}
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$types = $reflectionType instanceof ReflectionUnionType
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? $reflectionType->getTypes()
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: [$reflectionType]
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;
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return in_array(
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'callable',
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array_map(
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fn(ReflectionNamedType $t) => $t->getName(),
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$types
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)
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);
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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