PHPCfg\Op\Expr::__construct PHP Method

    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);
        $this->result = $this->addWriteRef(new Temporary());
    }

 public function __construct(array $keys, array $values, array $byRef, array $attributes = [])
 {
     parent::__construct($attributes);
     $this->keys = $this->addReadRef($keys);
     $this->values = $this->addReadRef($values);
     $this->byRef = $byRef;
 }