public function getFilteredRegiments() { $age = $this->input->post("age"); $regimens = ""; if ($age == '') { $regimens = Regimen::getRegimens(); } else { if ($age >= 15) { //adult regimens $regimens = Regimen::getAdultRegimens(); } else { if ($age < 15) { //paediatric regimens $regimens = Regimen::getChildRegimens(); } } } echo json_encode($regimens); }