/** * @see SampleInterface::get_organisation_unit_id() * @return integer */ public function get_organisation_unit_id() { if ($this->sample_id) { $sample_security = new SampleSecurity($this->sample_id); $sample_security_array = $sample_security->list_organisation_units(); if (is_array($sample_security_array) and count($sample_security_array) >= 1) { return $sample_security_array[0]; } else { return null; } } else { return null; } }