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c3214dc392
git-svn-id: https://svn.php.net/repository/phpdoc/es/trunk@337500 c90b9560-bf6c-de11-be94-00142212c4b1
131 lines
3.6 KiB
XML
131 lines
3.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: b9271c0d58c90c9359444348192c7c3f7d9e178f Maintainer: seros Status: ready -->
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<!-- Reviewed: yes Maintainer: seros -->
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<refentry xml:id="function.rand" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>rand</refname>
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<refpurpose>Genera un número entero aleatorio</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>int</type><methodname>rand</methodname>
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<void/>
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</methodsynopsis>
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<methodsynopsis>
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<type>int</type><methodname>rand</methodname>
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<methodparam><type>int</type><parameter>min</parameter></methodparam>
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<methodparam><type>int</type><parameter>max</parameter></methodparam>
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</methodsynopsis>
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<simpara>
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Si se invoca sin los argumentos opcionales <parameter>min</parameter> y
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<parameter>max</parameter>, <function>rand</function>
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devuelve un entero pseudoaleatorio entre 0 y
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<function>getrandmax</function>. Para obtener un número aleatorio
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entre 5 y 15 (incluidos), por ejemplo, use <literal>rand(5,
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15)</literal>.
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</simpara>
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&caution.cryptographically-insecure;
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<note>
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<simpara>
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En algunas plataformas (como en Windows), <function>getrandmax</function>
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sólo alcanza hasta 32767. En caso de necesitar un valor mayor de 32767, se
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deberá especificar <parameter>min</parameter> y <parameter>max</parameter> para
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crear un valor mayor que este, o considere emplear
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<function>mt_rand</function> en su lugar.
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</simpara>
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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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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>min</parameter></term>
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<listitem>
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<para>
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El menor valor a devolver (por defecto: 0)
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>max</parameter></term>
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<listitem>
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<para>
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El mayor valor a devolver (por defecto: <function>getrandmax</function>)
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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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Un valor pseudoaleatorio entre <parameter>min</parameter>
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(o 0) y <parameter>max</parameter> (o <function>getrandmax</function>, incluidos).
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</para>
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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 <function>rand</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo rand() . "\n";
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echo rand() . "\n";
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echo rand(5, 15);
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?>
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]]>
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</programlisting>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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7771
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22264
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11
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]]>
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</screen>
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</example>
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</para>
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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>srand</function></member>
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<member><function>getrandmax</function></member>
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<member><function>mt_rand</function></member>
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<member><function>random_int</function></member>
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<member><function>random_bytes</function></member>
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<member><function>openssl_random_pseudo_bytes</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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