src/core/class-papi-core-conditional-rules.php
public function rule_not_in( Papi_Core_Conditional_Rule $rule ) {
		list( $value, $rule_value ) = $this->get_converted_value( $rule );

		if ( ! is_array( $rule_value ) ) {
			return false;
		}

		return ! in_array( $value, $rule_value, true );
	}
public function rule_not_in( Papi_Core_Conditional_Rule $rule ) {
		list( $value, $rule_value ) = $this->get_converted_value( $rule );

		if ( ! is_array( $rule_value ) ) {
			return false;
		}

		return ! in_array( $value, $rule_value, true );
	}
Not in array conditional rule.

@param  Papi_Core_Conditional_Rule $rule

@return bool