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https://github.com/sigmasternchen/php-doc-en
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c428dd77e8
Deals with bug #20216 as per Leon's request. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@104687 c90b9560-bf6c-de11-be94-00142212c4b1
91 lines
2.3 KiB
XML
91 lines
2.3 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<!-- splitted from ./en/functions/var.xml, last change in rev 1.87 -->
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<refentry id="function.is-callable">
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<refnamediv>
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<refname>is_callable</refname>
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<refpurpose>
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Find out whether the argument is a valid callable construct
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>bool</type><methodname>is_callable</methodname>
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<methodparam><type>mixed</type><parameter>var</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>syntax_only</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>callable_name</parameter></methodparam>
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</methodsynopsis>
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<para>
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&warn.undocumented.func;
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</para>
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<!--
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<simpara>
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The <parameter>var</parameter> parameter is the name of a function or method.
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Also, class or object methods are specified by passing a numerical array with
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two elements: the class or object, and a method name.
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</simpara>
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<simpara>
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The optional <parameter>syntax_only</parameter> parameter will check
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only for syntax and defaults to &false; The third <parameter>
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callable_name</parameter> parameter is also optional.
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</simpara>
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<para>
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In our example below note, however, that despite the implication that
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<literal>a::b()</literal> is a callable static method, this is not the
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case.
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<example>
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<title>Using <function>is_callable</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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class a
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{
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var $c;
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function b() {
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return($this->c);
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}
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}
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$d = new a;
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if(is_callable(array($d, 'b'), FALSE, $name)) {
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echo $name;
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}
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/* The above will print:
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a::
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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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-->
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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:"../../../../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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