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