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PHP : Function Reference : Stream Functions : stream_context_get_default

stream_context_get_default

Retreive the default streams context (PHP 5 >= 5.1.0)
resource stream_context_get_default ( [array options] )

Returns the default stream context which is used whenever file operations (fopen(), file_get_contents(), 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_context_create().

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

Example 2372. Using stream_context_get_default()

<?php
$default_opts
= array(
 
'http'=>array(
   
'method'=>"GET",
   
'header'=>"Accept-language: en\r\n" .
             
"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\r\n" .
             
"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(), and Listing of supported wrappers with context options (Appendix O, List of Supported Protocols/Wrappers).

Code Examples / Notes » stream_context_get_default

rquadling

If you are using stream_context_get_default() and are still finding that some functions do not work, make sure that they are not based upon the libxml functions (DOM, SimpleXML and XSLT). These require their own context.
You can easily set them using the following code ...
<?php
// Define the default, system-wide context.
$r_default_context = stream_context_get_default
(
array
(
'http' => array
( // All HTTP requests are passed through the local NTLM proxy server on port 8080.
'proxy' => 'tcp://127.0.0.1:8080',
'request_fulluri' => True,
),
)
);
// Though we said system wide, some extensions need a little coaxing.
libxml_set_streams_context($r_default_context);
?>
See http://rquadling.php1h.com/php_ntlm.php for more info (sorry for the ads).


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stream_bucket_append
stream_bucket_make_writeable
stream_bucket_new
stream_bucket_prepend
stream_context_create
stream_context_get_default
stream_context_get_options
stream_context_set_option
stream_context_set_params
stream_copy_to_stream
stream_encoding
stream_filter_append
stream_filter_prepend
stream_filter_register
stream_filter_remove
stream_get_contents
stream_get_filters
stream_get_line
stream_get_meta_data
stream_get_transports
stream_get_wrappers
stream_register_wrapper
stream_resolve_include_path
stream_select
stream_set_blocking
stream_set_timeout
stream_set_write_buffer
stream_socket_accept
stream_socket_client
stream_socket_enable_crypto
stream_socket_get_name
stream_socket_pair
stream_socket_recvfrom
stream_socket_sendto
stream_socket_server
stream_socket_shutdown
stream_wrapper_register
stream_wrapper_restore
stream_wrapper_unregister
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