/**
 * Calculate member age based on date of birth
 *
 * @param int $id User id to get the age for
 *
 * @return string
 */
function get_member_age_r_sq( $id , $birthday_field_name) {
    $default_age_field = get_profile_id_by_name( $birthday_field_name );
    $age_field         = sq_option( 'bp_age_field', $default_age_field );
    if ( $age_field == 0 ) {
        $age_field = $default_age_field;
    }

    if ( bp_is_active( 'xprofile' ) && xprofile_get_field_data( $age_field, $id ) ) {
        $birth = BP_XProfile_ProfileData::get_value_byid( $age_field, $id );

        $field = new BP_XProfile_Field ( $age_field );

        if ( $field->type == 'birthdate' ) {
            return strip_tags( $birth );
        }
        if ( ! empty( $birth ) ) {
            $diff = time() - strtotime( $birth );
            $age  = floor( $diff / ( 365 * 60 * 60 * 24 ) );
        }
    } else {
        $age = '';
    }

    return $age;
}

function display_user_age($birthday_field_name = 'Birthday'){
    return get_member_age_r_sq( bp_get_member_user_id(), $birthday_field_name );
}