<?xml version="1.0" encoding="utf-8"?>

<!-- EN-Revision: 943c1285bd3808ad764f01da00b59458110133c0 Maintainer: PhilDaiguille Status: ready -->

<!-- Reviewed: no -->

<refentry xml:id="function.get-headers" xmlns="http://docbook.org/ns/docbook">

<refnamediv>

<refname>get_headers</refname>

<refpurpose>Devuelve todos los encabezados enviados por el servidor en respuesta a una petición HTTP</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type class="union"><type>array</type><type>false</type></type><methodname>get_headers</methodname>

<methodparam><type>string</type><parameter>url</parameter></methodparam>

<methodparam choice="opt"><type>bool</type><parameter>associative</parameter><initializer>&false;</initializer></methodparam>

<methodparam choice="opt"><type class="union"><type>resource</type><type>null</type></type><parameter>context</parameter><initializer>&null;</initializer></methodparam>

</methodsynopsis>

<para>

<function>get_headers</function> devuelve un array con los encabezados enviados por el

servidor en respuesta a una petición HTTP.

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>url</parameter></term>

<listitem>

<para>

La URL de destino.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>associative</parameter></term>

<listitem>

<para>

Si el argumento opcional <parameter>associative</parameter> está definido como &true;,

<function>get_headers</function> analiza la respuesta y define los índices del array.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>context</parameter></term>

<listitem>

<para>

Un contexto de recurso válido creado con

<function>stream_context_create</function>, o &null; para utilizar el contexto por omisión.

</para>

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

Devuelve un array indexado o asociativo que contiene los encabezados, o &false;

en caso de error.

</para>

</refsect1>

<refsect1 role="changelog">

&reftitle.changelog;

<para>

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

<row>

<entry>8.0.0</entry>

<entry>

<parameter>associative</parameter> ha sido cambiado de <type>int</type> a <type>bool</type>.

</entry>

</row>

<row>

<entry>7.1.0</entry>

<entry>

El argumento <parameter>context</parameter> ha sido añadido.

</entry>

</row>

</tbody>

</tgroup>

</informaltable>

</para>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<para>

<example>

<title>Ejemplo con <function>get_headers</function></title>

<programlisting role="php">

<![CDATA[

<?php

$url = 'http://www.example.com';

print_r(get_headers($url));

print_r(get_headers($url, true));

?>

]]>

</programlisting>

&example.outputs.similar;

<screen>

<![CDATA[

Array

(

[0] => HTTP/1.1 200 OK

[1] => Date: Sat, 29 May 2004 12:28:13 GMT

[2] => Server: Apache/1.3.27 (Unix) (Red-Hat/Linux)

[3] => Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT

[4] => ETag: "3f80f-1b6-3e1cb03b"

[5] => Accept-Ranges: bytes

[6] => Content-Length: 438

[7] => Connection: close

[8] => Content-Type: text/html

)

Array

(

[0] => HTTP/1.1 200 OK

[Date] => Sat, 29 May 2004 12:28:14 GMT

[Server] => Apache/1.3.27 (Unix) (Red-Hat/Linux)

[Last-Modified] => Wed, 08 Jan 2003 23:11:55 GMT

[ETag] => "3f80f-1b6-3e1cb03b"

[Accept-Ranges] => bytes

[Content-Length] => 438

[Connection] => close

[Content-Type] => text/html

)

]]>

</screen>

</example>

<example>

<title>Ejemplo con <function>get_headers</function> utilizando HEAD</title>

<programlisting role="php">

<![CDATA[

<?php

// Por omisión, get_headers utiliza una petición GET para recuperar los

// encabezados. Si se desea enviar una petición HEAD, puede hacerse

// utilizando un contexto de flujo:

$context = stream_context_create(

[

'http' => array(

'method' => 'HEAD'

)

]

);

$headers = get_headers('http://example.com', false, $context);

?>

]]>

</programlisting>

</example>

</para>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<para>

<simplelist>

<member><function>apache_request_headers</function></member>

</simplelist>

</para>

</refsect1>

</refentry>

<!-- Keep this comment at the end of the file

Local variables:

mode: sgml

sgml-omittag:t

sgml-shorttag:t

sgml-minimize-attributes:nil

sgml-always-quote-attributes:t

sgml-indent-step:1

sgml-indent-data:t

indent-tabs-mode:nil

sgml-parent-document:nil

sgml-default-dtd-file:"~/.phpdoc/manual.ced"

sgml-exposed-tags:nil

sgml-local-catalogs:nil

sgml-local-ecat-files:nil

End:

vim600: syn=xml fen fdm=syntax fdl=2 si

vim: et tw=78 syn=sgml

vi: ts=1 sw=1

-->