Can't figure out why my PHP isn't inserting in MySQL DB

Question

I'm trying to insert data from simple register form into MySQL. I have my db hosted on Amazon AWS RDS, using DBeaver to edit it. When I run the code I get the following

affected_rows." data inserted into database."; } else { echo "An error has occurred. The items were not added."; } $db->close(); ?>

How do i fix this? Is my PHP wrong? I'm confused whether or not I can use MySQLi, how would i determine that? I'm assuming Amazon RDS MySQL is compatible.

<?php
// create short variable names
$name=$_POST['name'];
$birthdate=$_POST['birthdate'];
$email=$_POST['email'];
$password=$_POST['password'];
$address=$_POST['address'];
$city+$_POST['city'];

if (!get_magic_quotes_gpc()) {
    $name = addcslashes($name);
    $birthdate = addslashes($birthdate);
    $email = addcslashes($email);
    $password = addcslashes($password);
    $address = addcslashes($address);
    $city = addcslashes($city);
}

$host='xxxxxx'
$user='admin'
$password='xxxxx'
$dbname='users'
@ $db = mysqli_connect($host,$user,$password,$dbname)

if (mysqli_connect_errno()) {
    echo 'Error: Could not connect to database. Please try again later.';
    exit;
}

// Execute the query
$query = "INSERT INTO vestorinfo (name,birthdate,email,password,address,city)
    VALUES ('$_POST[name]','$_POST[birthdate]','$_POST[email]','$_POST[password]','$_POST[address]','$_POST[city]')";
$result = mysqli_query($query)
        or die ("Couldn't execute query."};

if ($result) {
    echo $db->affected_rows." data inserted into database.";
} else {
    echo "An error has occurred. The items were not added.";
}

$db->close();
?>

Here is the form from the html page

    <div id="registerform">
    <form action="php/registerprocess.php" method="post" class="form-horizontal">

<fieldset>

<!-- Form Name -->

<!-- Text input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="name">Name</label>  
  <div class="col-md-4">
  <input id="name" name="name" placeholder="Your name" class="form-control input-md" required="" type="text">

  </div>
</div>

<!-- Text input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="birthdate">Birth Date</label>  
  <div class="col-md-4">
  <input id="birthdate" name="birthdate" placeholder="07/04/1950" class="form-control input-md" required="" type="text">

  </div>
</div>

<!-- Text input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="email">Email</label>  
  <div class="col-md-4">
  <input id="email" name="email" placeholder="" class="form-control input-md" required="" type="text">

  </div>
</div>

<!-- Password input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="password">Password</label>
  <div class="col-md-4">
    <input id="password" name="password" placeholder="" class="form-control input-md" required="" type="password">
    <span class="help-block">Must be &gt;= 8 characters including at least 1 number</span>
  </div>
</div>

<!-- Text input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="email">Address</label>  
  <div class="col-md-4">
  <input id="address" name="address" placeholder="" class="form-control input-md" required="" type="text">
  </div>
</div>

<!-- Text input-->
<div class="form-group">
  <label class="col-md-4 control-label" for="email">City</label>  
  <div class="col-md-4">
  <input id="city" name="city" placeholder="" class="form-control input-md" required="" type="text">
  </div>
</div>
</div>

</fieldset>

Answer 1

Your code is at risk for sql injection and you should use param binding instead of var as $_POST anyway respect to you question the missing insert values could be because are related to the fact you are referring to the index of $_POST in wrong way

eg : using a concatenation you should

  $query = "INSERT INTO vestorinfo (name,birthdate,email,password,address,city)
      VALUES ('" . $_POST['name'] ." , " . $_POST['birthdate'] .", " . 
      $_POST['email'] . "," . $_POST['password'] . "," .
         $_POST['address'] . "," . $_POST['city'] . ")";