first try for a database for pending registrations

database.php

@@ -1,9 +1,10 @@
 <?php  
-$db_file = "db_file.sqlite"; 
+$db_file = dirname(__DIR__)."/db_file.sqlite";
 
 // create database file when not existent yet
 if (!file_exists($db_file)) {
  $db = new PDO('sqlite:' . $db_file);
+ $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  $db->exec("CREATE TABLE registrations(
   id INTEGER PRIMARY KEY AUTOINCREMENT, 
   first_name TEXT,
@@ -17,13 +18,11 @@ if (!file_exists($db_file)) {
 else {
  // establish connection 
  $db = new PDO('sqlite:' . $db_file);
- $ins_stmt = $db->prepare("INSERT INTO registrations
-    (first_name, last_name, note, email, username, verify_token)
-    VALUES (:first_name, :last_name, :note, :email, :username, :verify_token)");
+ $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 } 
 
 // set writeable when not set already
 if (!is_writable($db_file)) {
  chmod($db_file, 0777); 
 }
-?>
+?>