Scalr\UI\Request\JsonData::has PHP Метод

Checks if a value exists in an array

public has ( mixed $needle, boolean $strict = false ) : boolean
$needle	mixed	A value
$strict	boolean	optional If it is set to TRUE then function will also check the types of the needle in the haystack.
Результат	boolean	Returns TRUE if needle is found in the array, FALSE otherwise.

    public function has($needle, $strict = false)
    {
        return in_array($needle, (array) $this, $strict);
    }

JsonData