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git-svn-id: https://svn.php.net/repository/phpdoc/es/trunk@310291 c90b9560-bf6c-de11-be94-00142212c4b1
120 lines
3.4 KiB
XML
120 lines
3.4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 89a73e348c5d4bdd0300996566c672035745e2b0 Maintainer: yago Status: ready -->
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<refentry xml:id="function.current" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>current</refname>
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<refpurpose>Devuelve el elemento actual en un array</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>mixed</type><methodname>current</methodname>
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<methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
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</methodsynopsis>
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<para>
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Cada array tiene un puntero interno a su elemento "actual",
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que es iniciado desde el primer elemento insertado en el
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array.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>array</parameter></term>
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<listitem>
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<para>
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El array.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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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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La función <function>current</function> simplemente devuelve el
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valor del elemento del array que está siendo apuntado por el
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puntero interno. No desplaza el puntero de ninguna manera. Si el
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puntero interno apunta más allá del final de la lista de elementos o el array
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está vacío, <function>current</function> devolverá &false;.
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</para>
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&return.falseproblem;
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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>Ejemplo de uso de <function>current</function> y similares</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$transport = array('pie', 'bici', 'coche', 'avión');
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$mode = current($transport); // $mode = 'pie';
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$mode = next($transport); // $mode = 'bici';
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$mode = current($transport); // $mode = 'bici';
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$mode = prev($transport); // $mode = 'pie';
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$mode = end($transport); // $mode = 'avión';
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$mode = current($transport); // $mode = 'avión';
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$arr = array();
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var_dump(current($arr)); // bool(false)
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$arr = array(array());
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var_dump(current($arr)); // array(0) { }
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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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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<simpara>
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No hay manera de distinguir el inicio de un array de un elemento
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de tipo &false; <type>boolean</type>. Para recorrer adecuadamente
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que puede contener elementos &false; ver la función
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<function>each</function>.
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</simpara>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>end</function></member>
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<member><function>key</function></member>
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<member><function>each</function></member>
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<member><function>prev</function></member>
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<member><function>reset</function></member>
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<member><function>next</function></member>
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</simplelist>
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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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