Description:
------------
Starting from version 5.5.18 proc_open with socket handles does not wait for input. Everything work fine in 5.5.17 version of php. If I open up a child process and pass in socket to handle new clients commands in 5.5.17 version script is waiting for input and prints it. But in 5.5.18 and up till 7.0.4 this approach does not work anymore for windows and works fine on linux environments.

Test script:
---------------
proc.php 
########################################
$errno = '';
$errstr = '';
$socket = stream_socket_server("tcp://0.0.0.0:$port",$errno,$errstr);
$client = @stream_socket_accept($socket,1);
$handles = array(
			0 => $socket,
			1 => $socket,
			2 => STDERR,
		);
$pipes = array();
$h = proc_open('php.exe file.php',$handles,$pipes);

file.php
#####################################
echo(">");
if (($cmd = fgets(STDIN,2048)) === false)
		return;
$cmd = trim($cmd);
echo($cmd);




Expected result:
----------------
Child process can read and write to socket.

Actual result:
--------------
Child process terminates as $cmd = fgets(STDIN,2048) is always false.