(PHP 7 >= 7.3.0)
socket_wsaprotocol_info_export — Exports the WSAPROTOCOL_INFO Structure
$socket
   , int  $target_pid
   ) : string
   Exports the WSAPROTOCOL_INFO structure into shared memory and returns
   an identifier to be used with socket_wsaprotocol_info_import(). The
   exported ID is only valid for the given target_pid.
  
Note: This function is available only on Windows.
socketA valid socket resource.
target_pidThe ID of the process which will import the socket.
   Returns an identifier to be used for the import,  or FALSE on failure