stream_bucket_prepend
In addition to the context options mentioned above (appendix N), lower down context options for sockets can be found in appendix P - http://www.php.net/manual/en/transports.php
stream_context_create
(PHP 4 >= 4.3.0, PHP 5)
stream_context_create — Create a streams context
Descrierea
resource stream_context_create
([ array $options
[, array $params
]] )
Creates and returns a stream context with any options supplied in options preset.
Parametri
- options
-
Must be an associative array of associative arrays in the format $arr['wrapper']['option'] = $value.
Default to an empty array.
- params
-
Must be an associative array in the format $arr['parameter'] = $value. Refer to stream_context_set_params() for a listing of standard stream parameters.
Valorile întroarse
A stream context resource.
Istoria schimbărilor
| Versiunea | Descriere |
|---|---|
| 5.3.0 | Added the optional params argument. |
Exemple
Example #1 Using stream_context_create()
<?php
$opts = array(
'http'=>array(
'method'=>"GET",
'header'=>"Accept-language: en\r\n" .
"Cookie: foo=bar\r\n"
)
);
$context = stream_context_create($opts);
/* Sends an http request to www.example.com
with additional headers shown above */
$fp = fopen('http://www.example.com', 'r', false, $context);
fpassthru($fp);
fclose($fp);
?>
Vedeţi de asemenea
- stream_context_set_option()
- Listing of supported wrappers (List of Supported Protocols/Wrappers)
- Context options (Context options and parameters)
add a note
User Contributed Notesstream_context_create
davep at atomicdroplet dot com
17-May-2007 05:02
17-May-2007 05:02
jrubenstein at gmail dot com
27-Apr-2007 10:36
27-Apr-2007 10:36
Something to keep in mind when creating SSL streams (using https://):
<?php
$context = context_create_stream($context_options)
$fp = fopen('https://url', 'r', false, $context);
?>
One would think - the proper way to create a stream options array, would be as follows:
<?php
$context_options = array (
'https' => array (
'method' => 'POST',
'header'=> "Content-type: application/x-www-form-urlencoded\r\n"
. "Content-Length: " . strlen($data) . "\r\n",
'content' => $data
)
);
?>
THAT IS THE WRONG WAY!!!
Take notice to the 3rd line: 'https' => array (
The CORRECT way, is as follows:
<?php
$context_options = array (
'http' => array (
'method' => 'POST',
'header'=> "Content-type: application/x-www-form-urlencoded\r\n"
. "Content-Length: " . strlen($data) . "\r\n",
'content' => $data
)
);
?>
Notice, the NEW 3rd line: 'http' => array (
Now - keep this in mind - I spent several hours trying to trouble shoot my issue, when I finally stumbled upon this non-documented issue.
The complete code to post to a secure page is as follows:
<?php
$data = array ('foo' => 'bar', 'bar' => 'baz');
$data = http_build_query($data);
$context_options = array (
'http' => array (
'method' => 'POST',
'header'=> "Content-type: application/x-www-form-urlencoded\r\n"
. "Content-Length: " . strlen($data) . "\r\n",
'content' => $data
)
);
$context = context_create_stream($context_options)
$fp = fopen('https://url', 'r', false, $context);
?>
chris dot vigelius at gmx dot net
11-Apr-2007 06:34
11-Apr-2007 06:34
It seems that the authorization example given below by"php at charlesconsulting dot com" does NOT work with PHP 5.2.1, since the 'header' option will be simply ignored if it is not an array (but a string).
The following works:
$url = 'http://protectedstuff.com';
$auth = base64_encode('user:password');
$header = array("Authorization: Basic $auth");
$opts = array( 'http' => array ('method'=>'GET',
'header'=>$header));
$ctx = stream_context_create($opts);
file_get_contents($url,false,$ctx);
See also http://bugs.php.net/bug.php?id=41051
php at charlesconsulting dot com
13-Jan-2007 08:14
13-Jan-2007 08:14
Here's an example of retrieving a page which requests a username and password using the basic authorization scheme. This calls the w3.org web page validator for a password protected page.
//$fileurl contains page to validate
$validateurl="http://validator.w3.org/check?uri=$fileurl";
$cred = sprintf('Authorization: Basic %s',
base64_encode('username:password') );
$opts = array(
'http'=>array(
'method'=>'GET',
'header'=>$cred)
);
$ctx = stream_context_create($opts);
$validate=file_get_contents($validateurl,false,$ctx);
sp0n9e at gmail dot com
28-Dec-2006 11:18
28-Dec-2006 11:18
Here's a very simple way to do posts easily without need of cURL or writing an http request by hand using the tcp:// wrapper. I like using contexts just because of their ubiquity and the lack of an optional library such as cURL (though one of the more popular libraries).
<?php
$options = array(
'http'=>array(
'method'=>"POST",
'header'=>
"Accept-language: en\r\n".
"Content-type: application/x-www-form-urlencoded\r\n",
'content'=>http_build_query(array('foo'=>'bar'))
));
$context = stream_context_create($options);
fopen('http://www.example.com/',false,$context);
?>
dev at zayso dot org
05-Mar-2006 06:31
05-Mar-2006 06:31
Example of a stream for reading a string passed
via a context object.
<?php
/* ----------------------------------------
* Designed to read from a string
*/
class sfStreamStringRead
{
const PROTOCOL = 'stringread'; /* Underscore not allowed */
protected $dataPos = NULL;
protected $dataBuf = NULL;
protected $dataLen = NULL;
function stream_open($path, $mode, $options, &$opened_path)
{
/* Verify context has data */
$contextOptions = stream_context_get_options($this->context);
if (!isset($contextOptions[self::PROTOCOL]['data'])) {
return FALSE;
}
$this->dataBuf = $contextOptions[self::PROTOCOL]['data'];
$this->dataLen = strlen($this->dataBuf);
$this->dataPos = 0;
return TRUE;
}
function stream_read($count){
$ret = substr($this->dataBuf, $this->dataPos, $count);
$this->dataPos += strlen($ret);
return $ret;
}
function stream_eof(){
return $this->dataPos >= $this->dataLen;
}
function stream_tell(){
return $this->dataPos;
}
/* ------------------------------------------
* A few helper functions
*/
static function genURL()
{
return self::PROTOCOL . '://';
}
static function genContext($dataBuf)
{
return stream_context_create(array(
self::PROTOCOL => array(
'data' => $dataBuf,
),
));
}
static function open($dataBuf)
{
return fopen(self::genURL(),'r',FALSE,self::genContext($dataBuf));
}
}
stream_wrapper_register(
sfStreamStringRead::PROTOCOL,
'sfStreamStringRead'
);
$sp = sfStreamStringRead::open("Some String Data\n");
echo fgets($sp);
fclose($sp);
?>
net_navard at yahoo dot com
09-Dec-2005 11:38
09-Dec-2005 11:38
Hi,you can create an array of parameters(what it's called a stream context),which can be transmitted each time you read or write a stream through a socket.In the below example:
$opts =array('http'=>arra('method'=>"GET",
'header'=>"Accept-language:en\r\n"."Cookie: foo=bar\r\n");
What you're actually doing is create a set of parameters(the protocol to be used,the request method,additional http headers and a cookie) which will be used each time you open a socket connection to request www.example.com.This saves a lot of time if you want to use these parameters (called a stream context) whenever you include them when making a request to www.example.com,instead of having to specify them over and over again.
Using the previous example,say you want to create a stream context,which sends a "Content-Type" http header and utilize it when making a request to www.example.com.Take a look:
$opts = array('http'=>array('method'=>"GET",
'header'=>"Content-Type: text/xml; charset=utf-8");
$context = stream_context_create($opts);
$fp = fopen('http://www.example.com','r',false,$context);
fpassthru($fp);
fclose($fp);
Now,when you make a request to www.example.com,the above http header will be included within the socket and transmitted to the server.Best of luck for you friends,Hossein