stream_wrapper_register(protocol, classname) Registers a protocol; implementation is part of the class
The class implements standard functionality like reading, writing, or changing the file position.
php_user_filter is a predefined class in php and is used in conjunction with user-defined filters.
stream_context_set_params — Set parameters for a stream/wrapper/context
Stream_context_get_options — Retrieve options for a stream/wrapper/context
Returns an array of options on the specified stream or context.
<?php
$params = array("method" => "POST");
stream_context_set_default(array("http" => $params));
echo '<pre>';print_r(stream_context_get_options(stream_context_get_default()));
?>
Stream_context_create — Creates a stream context.
Creates and returns a stream context with any options supplied in options preset.
<?php
$opts = array(
'http'=>array(
'method'=>"GET",
'header'=>"Accept-language: en\r\n" .
"Cookie: foo=bar\r\n"
)
);
$context = stream_context_create($opts);
$fp = fopen('http://www.phpcodez.com', 'r', false, $context);
fpassthru($fp);
fclose($fp);
?>
o Refers to the act of providing different output based on criteria from the request
o The process inspects the http request headers and/or the request uri, and varies the response appropriately
o Commonly used for:
providing different output for requests originated via xmlhttprequest
providing different output based on accept http headers (ex: rest endpoints)
providing alternate layouts/content based on browser detection