<?php
$host = "localhost";
$user = "globalty_trans";
$password = "transport2019";
$name = "globalty_tranport";
try{
$con = new mysqli($host, $user, $password,$name);
if($con->connect_error) {
    die("error " . $con->connect_error);
}
}catch(Exception $e){}

if(isset($_POST['insert'])){
  $fullName=$_POST['fn'];
  $email=$_POST['em'];
  $password=$_POST['pas'];
  $pasHash = password_hash($password, PASSWORD_BCRYPT,array(cost <= 12));

$check = mysqli_prepare($con, "SELECT * FROM users WHERE username = ?");
if ($check) {
    $check->bind_param("s", $email);
    $check->execute();
    $result = $check->get_result();
    $num_of_rows = $result->num_rows;
    if($num_of_rows == 0){
    try{
      $insert = mysqli_prepare($con, "INSERT INTO users (fullname,username,password) VALUES (?,?,?)");
      $insert->bind_param("sss", $fullName,$email, $pasHash);
      $insert->execute();
      echo "0";
     }catch(Exception $e){
       echo "1";
     }
    }
    else{
      echo "2";
    }
   }
}
?>