POSTing to an Apache Server

There is no "Submit" command. How do you know it is waking up the little php script?

edit: Are you using something like this to read the response?

  client.println("POST /mypage.php HTTP/1.0\r\n\r\ntestone=1&testtwo=2");

  while(client.connected()) {
    while(client.available()) {
      char c = client.read();
      Serial.write(c);
    }
  }
  client.stop();

If you want an exact answer, then maybe you should post your code.