code: private function generateString()
      {
          $this->generateNumbers();
          $this->adjective = $this->adjectives[$this->first];
          $this->animal = $this->animals[$this->second];
          switch ($this->case) {
              case 'ucfirst':
                  $this->string = ucfirst($this->adjective . $this->animal . $this->number);
                  break;
              case 'ucwords':
              case 'sentence':
                  $this->string = ucfirst($this->adjective) . ucfirst($this->animal) . ucfirst($this->number);
                  break;
              case 'camel':
                  $this->string = $this->adjective . ucfirst($this->animal) . $this->number;
                  break;
              default:
                  $this->string = $this->adjective . $this->animal . $this->number;
                  break;
          }
      }
docs: Generate a string.