PHP - Decalring Vars / Default Values

I sometime pass configuration settings as an associate array... 

public function __construct(JsonValidatorMethods $methods, array $options) {
    foreach($options as $option) {
        //validate whether valid and if so set $this->$option.  Options not provided will default to their private $strictMode=true value
    }
}
$validator=new JsonValidator($methods, ['sanitize'=>true, 'strictMode'=>true, 'setDefault'=>false]);

And other times pass them as individual arguments...

public function __construct(JsonValidatorMethods $methods, bool $sanitize=false, bool $strictMode=false, bool $setDefault=true) {}
$validator=new JsonValidator($methods, true, true, false);

I have a class which I was doing the later and also which I wish to allow them to be first set in the constructor but also specified when calling some of the public methods.  It became a pain to pass all the individual flags to each private method, so I thought I would give bitmask constants a try as shown below.

I recognize that this approach only allows booleans to be passed, but I am okay with this.  The part I am not sure about is how best have default values.  For instance, maybe the default is $this->options=0b0110, 0b1100 is passed to the constructor, and 0b1 (aka 0b0001) is passed is passed to the public method.  The high three bits in 0b0001 just are not provided, but how can I not interpret them as explicitly false?

Also, a little off topic, but am I implementing this bitmask approach correctly, and any strong options whether one of these three approaches or some totally other approach is best?

Thanks

class JsonValidator
{
    //Use provided options
    const SANITIZE      =   0b0001;   //Whether to sanitize (i.e. 'false' is changed to false)
    const STRICTMODE    =   0b0010;   //Currently only enfources that boolean is true/false (instead of 1/0 or "true"/"false")
    const SETDEFAULT    =   0b0100;   //If true, type double and value "nan" will be converted to 0, etc.

    private $methods, $options;

    static public function create(int $options=0):self {
        return new self(new JsonValidatorMethods, $options);
    }

    static public function getOption(array $options):int {
        $o=0;
        foreach($options as $option) {
            if(!defined("self::$option")){
                throw new JsonValidatorErrorException((is_string($option)?$option:'given constant').' is not valid');
            }
            $o=$o|constant("self::$option");
        }
        return $o;
    }

    public function __construct(JsonValidatorMethods $methods, int $options=0) {
        $this->methods=$methods;
        $this->options=$options;
    }

    public function validate(array $input, array $rules, int $options=0){

        $options=$options|$this->options;

        if($options & self::SANITIZE) {
            $value=$this->sanitize($input, $rules, $options);
        }
    }

    private function sanitize(array $input, array $rules, int $options=0){}
}

$validator=new JsonValidator($methods, JsonValidator::SANITIZE|JsonValidator::SETDEFAULT);