There is the curl extension already which you should
use for that.

 

Thanks for directing me to the curl extension it will be really helpfull but The advantage of PHP over all other scripting languages is its ease of use. 

This is the code needed to do a simple post request using curl.

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"hello.php");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "postvar1=value1&postvar2=value2&postvar3=value3");
curl_exec ($ch);
curl_close ($ch); 

Too long too difficult to understand all the steps for the average user. We can make it easier as below but 
I'd like a function in the php core like this

postrequest($url,$parameters);

function postrequest($url,$parameters) {
 $ch = curl_init();

 curl_setopt($ch, CURLOPT_URL,$url)
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $parameters);

 curl_exec ($ch);
 curl_close ($ch); 
}

This would encourage PHP developers to use Java MVC like archutechture  where a request can be processed on one page and then forwarded to another with a requestDispatcher or  post request. Communication between different pages is currently one of PHPs big weaknesses where it loses out to servlets. Make curl part of the core and use simplfied functions to make it really easy to use!!

This is a misunderstanding of HTTP.

Closing the request.