$contact->table = 'contacts'; $validator = new Validator(); if ($_SERVER['REQUEST_METHOD'] == 'GET') { $con_id = $validator->cleanData($_GET['con_id']); $sql = "SELECT * FROM contacts WHERE id={$con_id}"; $result = $contact->select($sql); } if (!empty($result)) { $result = $result[0]; } if ($_SERVER['REQUEST_METHOD'] == 'POST') { $username = $validator->cleanData($_POST['username']); $phone = $validator->cleanData($_POST['phone']); $email = $validator->cleanData($_POST['email']); $con_id = $validator->cleanData($_POST['con_id']); $updated = $contact->update($con_id, $username, $phone, $email); echo json_encode(['updated' => $updated]); exit; } ?> <!doctype html> <html> <head> <title>Index page</title> <meta charset="utf-8"> <link href="../../css/main.css" rel="stylesheet"> <script type="text/javascript"> function update(){} </script> </head>