How do I get the return of a method that depends on another within a class?

I'm using a class called Semelhantes which will have 2 methods.

The features takes 3 characteristics of the current property through id .

resemblant mounts a query that aims to bring real estate that looks like the current property and shows it as a kind of real estate related . p>

You can observe in the features method at the end of it that I have already been able to store the attributes that I will use to call query using the resemblant method. These attributes are stored.

I'm sending these attributes to the resemblant method but when I try to call the information as it can be observed in the background of the code, instantiating the object and storing the result, I do not have the method return.

  

In this case, how do I get the return of the resemblant() method?

<?php 

require("Acesso.class.php");

class Semelhantes extends Acesso
{
    public function features($id)
    {
        $postFields  = '{"fields":["Codigo","Categoria","Bairro","Cidade","ValorVenda","ValorLocacao","Dormitorios","Suites","Vagas","AreaTotal","AreaPrivativa","Caracteristicas","InfraEstrutura"]}';
        $url         = 'http://danielbo-rest.vistahost.com.br/'.$this->vsimoveis.'/'.$this->vsdetalhes.'?key=' . $this->vskey;
        $url           .= '&imovel='.$id.'&pesquisa=' . $postFields;

        $ch = curl_init($url);
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
        curl_setopt( $ch, CURLOPT_HTTPHEADER , array( 'Accept: application/json' ) );
        $result = curl_exec($ch); 
        $result = json_decode($result, true);

        /**
         * Paramentros para filtrar semelhança
         * @var [type]
         */
        $fcidade    = str_replace(" ", "+", $result['Cidade']);
        $fdorms     = $result['Dormitorios'];
        $fvalor     = $result['ValorVenda'];

        return array(
            'cidade' => $fcidade, 
            'dorms' => $fdorms, 
            'valor' => $fvalor
        );

    }

    public function resemblant()
    {
        $get = $this->features($id);
        return $get['Cidade'];
    }

}

/* Chamando as funções em outra parte do sistema */
$obj        = new Semelhantes;
$features   = $obj->features(2);
$similar    = $obj->resemblant();