language/predefined/closure/fromcallable.xml
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9c74079f12d67cabb52c124d761f48275417d7eb
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="closure.fromcallable" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>Closure::fromCallable</refname>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<methodsynopsis role="Closure">
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<modifier>public</modifier> <modifier>static</modifier> <type>Closure</type><methodname>Closure::fromCallable</methodname>
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<methodparam><type>callable</type><parameter>callable</parameter></methodparam>
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<methodparam><type>callable</type><parameter>callback</parameter></methodparam>
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</methodsynopsis>
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<para>
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Create and return a new <link linkend="functions.anonymous">anonymous
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function</link> from given <parameter>callable</parameter> using the
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current scope. This method checks if the <parameter>callable</parameter> is
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function</link> from given <parameter>callback</parameter> using the
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current scope. This method checks if the <parameter>callback</parameter> is
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callable in the current scope and throws a <classname>TypeError</classname>
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if it is not.
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</para>
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<note>
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<para>
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As of PHP 8.1.0, <link linkend="functions.first_class_callable_syntax">First class callable syntax</link> has the same semantics as this method.
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</para>
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</note>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<variablelist>
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<varlistentry>
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<term><parameter>callable</parameter></term>
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<term><parameter>callback</parameter></term>
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<listitem>
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<para>
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The callable to convert.
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&reftitle.returnvalues;
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<para>
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Returns the newly created <classname>Closure</classname> or throws a
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<classname>TypeError</classname> if the <parameter>callable</parameter> is
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<classname>TypeError</classname> if the <parameter>callback</parameter> is
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not callable in the current scope.
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</para>
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</refsect1>
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</refentry>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<simplelist>
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<member><link linkend="functions.anonymous">Anonymous functions</link></member>
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<member><link linkend="functions.first_class_callable_syntax">First class callable syntax</link></member>
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</simplelist>
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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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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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