stream_context_get_default(3) [php man page]

STREAM_CONTEXT_GET_DEFAULT(3)						 1					     STREAM_CONTEXT_GET_DEFAULT(3)

stream_context_get_default - Retrieve the default stream context

SYNOPSIS

       resource stream_context_get_default ([array  $options])

DESCRIPTION

	Returns  the  default  stream context which is used whenever file operations (fopen(3), file_get_contents(3), etc...) are called without a
       context parameter. Options for the default context can optionally be specified with this function using	the  same  syntax  as  stream_con-
       text_create(3).

PARAMETERS

	      o $options
		-$options must be an associative array of associative arrays in the format $arr['wrapper']['option'] = $value.

	      Note

		      As of PHP 5.3.0, the stream_context_set_default(3) function can be used to set the default context.

RETURN VALUES

	A stream context resource.

EXAMPLES

       Example #1

	      Using stream_context_get_default(3)

	      <?php
	      $default_opts = array(
		'http'=>array(
		  'method'=>"GET",
		  'header'=>"Accept-language: en
" .
			    "Cookie: foo=bar",
		  'proxy'=>"tcp://10.54.1.39:8000"
		)
	      );

	      $alternate_opts = array(
		'http'=>array(
		  'method'=>"POST",
		  'header'=>"Content-type: application/x-www-form-urlencoded
" .
			    "Content-length: " . strlen("baz=bomb"),
		  'content'=>"baz=bomb"
		)
	      );

	      $default = stream_context_get_default($default_opts);
	      $alternate = stream_context_create($alternate_opts);

	      /* Sends a regular GET request to proxy server at 10.54.1.39
	       * For www.example.com using context options specified in $default_opts
	       */
	      readfile('http://www.example.com');

	      /* Sends a POST request directly to www.example.com
	       * Using context options specified in $alternate_opts
	       */
	      readfile('http://www.example.com', false, $alternate);

	      ?>

SEE ALSO

       stream_context_create(3), Listing of supported wrappers with context options ("Supported Protocols and Wrappers")..

PHP Documentation Group 											     STREAM_CONTEXT_GET_DEFAULT(3)

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)