title: Warning: mysqli_stmt::bind_param(): Number of elements in type definition string doesn't match number of bind variables 11
body: <p>My code against SQL injection isn't working (error message in title).</p>
  
  <p>I simplified my code, but its still not working.</p>
  
  <pre><code>&lt;?php
  include "conf.php";
  
  $db = new mysqli($MYSQL_HOST, $MYSQL_USER, $MYSQL_PASS, $MYSQL_DB);
  
  $ltime =10;
  $url= 1;
  $title =2;
  
  
  
  $result = $db-&gt;prepare("INSERT INTO links VALUES ('', ?, ?, ?)");
  $result-&gt;bind_param('ss', $url, $title, $ltime);
  $result-&gt;execute();
  </code></pre>
  
  <p>I created DB and all variables are integer, first value is ID and it is created with an auto Increment flag.</p>