Is there a way to get Pokemon by cp?

[DragonStar01]

$pokeBank = $inventory->getItems()->getPokeBank();
   // print_r($pokeBank);

    $pokemon = $pokeBank->getPokemonsByType(PokemonId::RATTATA);
    print_r($pokemon);

Prints that i have 2 Rattata
So i just want to print the Rattatas Cp
and transfer the lowest one.
How can i do?
Thank you for everything :)
I was having many errors in this script but when i updated my php version to php7 all the errors gone away
sorry for my bad English

[NicklasWallgren]

This should do it.

// Retrieve pokemons of type rattata
$pokemons = $pokeBank->getPokemonsByType(PokemonId::RATTATA);

printf('Found %s number of rattats' . PHP_EOL, count($pokemons));

// Sort the pokemons by combat points
  uasort($pokemons, function (\NicklasW\PkmGoApi\Api\Pokemon\Pokemon $pokemon1, \NicklasW\PkmGoApi\Api\Pokemon\Pokemon $pokemon2) {
            return $pokemon1->getPokemonData()->getCp() <=> $pokemon2->getPokemonData()->getCp();
        });

// Retrieve the lowest pokemon
$lowestPokemon = current($pokemons);

printf('Transfer rattata with cp of %s' . PHP_EOL, $lowestPokemon->getPokemonData()->getCp());

// Transfer the pokemon
$lowestPokemon->transfer();

[DragonStar01]

Thank you very much :) BTW How can i change the response to json?

[NicklasWallgren]

What response? The list of pokemon?

[DragonStar01]

Sorry my bad