<?php session_start(); require_once 'DFA.php'; $data = null; if (isset($_GET['input'])) { $objDFA = new DFA(); $objDFA->getFromString($_SESSION['states']); //echo $_SESSION['states']; if ($objDFA->isAccepted($_GET['input'])) { $data['output'] = "ACCEPTED"; } else { $data['output'] = "REJECTED"; } $data['cur_state'] = $objDFA->cur_state; $data['sequence'] = $objDFA->getStateSequence($_GET['input']); } echo json_encode($data);