Overtrue\Validation\Validator::getSize PHP Method

    protected function getSize($attribute, $value)
    {
        $hasNumeric = $this->hasRule($attribute, $this->numericRules);
        // This method will determine if the attribute is a number, string, or file and
        // return the proper size accordingly. If it is a number, then number itself
        // is the size. If it is a file, we take kilobytes, and for a string the
        // entire length of the string will be considered the attribute size.
        if (is_numeric($value) && $hasNumeric) {
            return array_get($this->data, $attribute);
        } elseif (is_array($value)) {
            return count($value);
        } elseif (in_array($value, $_FILES, true)) {
            return $value->getSize() / 1024;
        } else {
            return $this->getStringSize($value);
        }
    }