Send an XML EPP request via TCP in PHP -

i'm using code connect registrar via tcp.

stream_socket_client('tcp://registrarwebsite:700', $errno, $errstr, 10, stream_client_connect, $fc) 

connection successful, $fc, using stream_context_create pass ssl certificate , key. @ point, works fine.

  $fc = stream_context_create(array(             'ssl' => array('allow_self_signed' => true,                 'local_cert' => 'ma_registrar_cert.pem',                 'local_pk' => 'ma_registrar_key.pem'         ))); 

i want add xml request stream_context_create, send xml epp requests distant server.

how that?

edit

this example of xml request want send server along stream context.

<?xml version="1.0" encoding="utf-8" standalone="no" ?>      <epp xmlns="urn:ietf:params:xml:ns:epp-1.0">    <command>      <create>        <domain:create xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">          <domain:name>testdomain.com</domain:name>          <domain:period unit="y">testdomain.com</domain:period>          <domain:registrant>john doe</domain:registrant>        </domain:create>      </create>      <cltrid>reference</cltrid>    </command>  </epp>