<?php
$serverProvider = $_POST['provider];
$action = $_POST['$action];

if ($serverProvider = "linode") {
  $provider = new class linodeProvider();
}

if ($serverProvider = "aws") {
   $provider = new class awsProvider();
}

switch($action) {
 case 'shutdown':
    $shutdown = new shutdown($provider);
  break;

 case 'power':
    $shutdown = new powerOn($provider);
  break;
}


class shutdown($provider) {
  $event = $provider->shutdown() //any provider

  if ($event->status = "success") {
     // if sucessfull shutdown
    // Do some logic here like update to mysql, notification, etc,
  }
}


class powerOn($provider) {
  $event = $provider->powerOn()

  // Do some logic here like update to mysql, notification, etc,
}