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git-svn-id: https://svn.php.net/repository/phpdoc/es/trunk@299321 c90b9560-bf6c-de11-be94-00142212c4b1
120 lines
3.3 KiB
XML
120 lines
3.3 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 96c9d88bad9a7d7d44bfb7f26c226df7ee9ddf26 Maintainer: yago Status: ready -->
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<!-- splitted from ./en/functions/exec.xml, last change in rev 1.2 -->
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<refentry xml:id="function.escapeshellcmd" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>escapeshellcmd</refname>
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<refpurpose>Escapar meta-caracteres del intérprete de
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comandos</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>string</type><methodname>escapeshellcmd</methodname>
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<methodparam><type>string</type><parameter>command</parameter></methodparam>
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</methodsynopsis>
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<para>
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<function>escapeshellcmd</function> escapa cualquier caracter en
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una cadena que pueda ser usado para engañar a un comando de
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shell a que ejecute comandos arbitrarios. Esta función puede
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ser usada para asegurarse de que cualquier dato viniendo de la
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entrada del usuario sea escapado antes de que este dato sea pasado
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a las funciones <function>exec</function> o
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<function>system</function>, o al <link
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linkend="language.operators.execution">operador de comilla
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invertida</link>.
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</para>
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<para>
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Los siguientes caracteres son precedidos por una barra invertida:
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<literal>#&;`|*?~<>^()[]{}$\</literal>,
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<literal>\x0A</literal> y
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<literal>\xFF</literal>. <literal>'</literal> y
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<literal>"</literal> son escapados únicamente si no
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están emparejados. En Windows, todos estos caracteres mas
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<literal>%</literal> son reemplazados por un espacio en su lugar.
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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>command</parameter></term>
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<listitem>
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<para>
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El comando a ser escapado.
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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 cadena escapada.
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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>escapeshellcmd</function></title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$e = escapeshellcmd($entrada_usuario);
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// aqui no nos importa si $e tiene espacios
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system("echo $e");
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$f = escapeshellcmd($nombre_archivo);
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// y aqui si, asi que usamos comillas
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system("touch \"/tmp/$f\"; ls -l \"/tmp/$f\"");
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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="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>escapeshellarg</function></member>
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<member><function>exec</function></member>
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<member><function>popen</function></member>
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<member><function>system</function></member>
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<member><link linkend="language.operators.execution">operador de
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comilla invertida</link></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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--> |