Seeking a developer using PHP or other programming languages, create a bot for whatshapp.
The bot must "respond" to two simple functions:
1) if a user opens the chat bot and type the command !weather, bot should automatically answer by providing today's temperature. (The location will be fixed and provided in the development phase, the service from which we would like to recover the temperature is [login to view URL] but you can suggest alternatives);
2) must be able to afford the massive sending of notifications regarding whatshapp messages to users who have opened the chat. (Same message to all users)
It's not allowed to install additional applications in addition to the application official whatshapp and must be used by all the mobile devices iOS and Android.