get_headers(3) [php man page]

GET_HEADERS(3)								 1							    GET_HEADERS(3)

get_headers - Fetches all the headers sent by the server in response to a HTTP request

SYNOPSIS

       array get_headers (string  $url, [int  $format])

DESCRIPTION

       get_headers(3) returns an array with the headers sent by the server in response to a HTTP request.

PARAMETERS

	      o $url
		- The target URL.

	      o $format
		- If the optional $format parameter is set to non-zero, get_headers(3) parses the response and sets the array's keys.

RETURN VALUES

	Returns an indexed or associative array with the headers, or FALSE on failure.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.1.3	|						    |
       |	|						    |
       |	|  This  function  now uses the default stream con- |
       |	| text,  which	can   be   set/changed	 with	the |
       |	| stream_context_set_default(3) function.	    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      get_headers(3) example

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

	      print_r(get_headers($url));

	      print_r(get_headers($url, 1));
	      ?>

	      The above example will output something similar to:

	      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
	      )

       Example #2

	      get_headers(3) using HEAD example

	      <?php
	      // By default get_headers uses a GET request to fetch the headers. If you
	      // want to send a HEAD request instead, you can do so using a stream context:
	      stream_context_set_default(
		  array(
		      'http' => array(
			  'method' => 'HEAD'
		      )
		  )
	      );
	      $headers = get_headers('http://example.com');
	      ?>

SEE ALSO

       apache_request_headers(3).

PHP Documentation Group 													    GET_HEADERS(3)

Plack::Response(3pm)					User Contributed Perl Documentation				      Plack::Response(3pm)

NAME

       Plack::Response - Portable HTTP Response object for PSGI response

SYNOPSIS

	 use Plack::Response;

	 sub psgi_handler {
	     my $env = shift;

	     my $res = Plack::Response->new(200);
	     $res->content_type('text/html');
	     $res->body("Hello World");

	     return $res->finalize;
	 }

DESCRIPTION

       Plack::Response allows you a way to create PSGI response array ref through a simple API.

METHODS

       new
	     $res = Plack::Response->new;
	     $res = Plack::Response->new($status);
	     $res = Plack::Response->new($status, $headers);
	     $res = Plack::Response->new($status, $headers, $body);

	   Creates a new Plack::Response object.

       status
	     $res->status(200);
	     $status = $res->status;

	   Sets and gets HTTP status code. "code" is an alias.

       headers
	     $headers = $res->headers;
	     $res->headers([ 'Content-Type' => 'text/html' ]);
	     $res->headers({ 'Content-Type' => 'text/html' });
	     $res->headers( HTTP::Headers->new );

	   Sets and gets HTTP headers of the response. Setter can take either an array ref, a hash ref or HTTP::Headers object containing a list
	   of headers.

       body
	     $res->body($body_str);
	     $res->body([ "Hello", "World" ]);
	     $res->body($io);

	   Gets and sets HTTP response body. Setter can take either a string, an array ref, or an IO::Handle-like object. "content" is an alias.

	   Note that this method doesn't automatically set Content-Length for the response. You have to set it manually if you want, with the
	   "content_length" method (see below).

       header
	     $res->header('X-Foo' => 'bar');
	     my $val = $res->header('X-Foo');

	   Shortcut for "$res->headers->header".

       content_type, content_length, content_encoding
	     $res->content_type('text/plain');
	     $res->content_length(123);
	     $res->content_encoding('gzip');

	   Shortcut for the equivalent get/set methods in "$res->headers".

       redirect
	     $res->redirect($url);
	     $res->redirect($url, 301);

	   Sets redirect URL with an optional status code, which defaults to 302.

	   Note that this method doesn't normalize the given URI string. Users of this module have to be responsible about properly encoding URI
	   paths and parameters.

       location
	   Gets and sets "Location" header.

	   Note that this method doesn't normalize the given URI string in the setter. See above in "redirect" for details.

       cookies
	     $res->cookies->{foo} = 123;
	     $res->cookies->{foo} = { value => '123' };

	   Returns a hash reference containing cookies to be set in the response. The keys of the hash are the cookies' names, and their
	   corresponding values are a plain string (for "value" with everything else defaults) or a hash reference that can contain keys such as
	   "value", "domain", "expires", "path", "httponly", "secure".

	   "expires" can take a string or an integer (as an epoch time) and does not convert string formats such as "+3M".

	     $res->cookies->{foo} = {
		 value => 'test',
		 path  => "/",
		 domain => '.example.com',
		 expires => time + 24 * 60 * 60,
	     };

       finalize
	     $res->finalize;

	   Returns the status code, headers, and body of this response as a PSGI response array reference.

AUTHOR

       Tokuhiro Matsuno

       Tatsuhiko Miyagawa

SEE ALSO

       Plack::Request

perl v5.14.2							    2012-06-21						      Plack::Response(3pm)