title: Call to a member function bind_param() on boolean
body: <p>I've been trying to fix this error for 2 hours, but no use. Here's my code:</p>
  
  <pre><code>$stmt = $conn-&gt;prepare("INSERT INTO posts (post_title, post_content, post_timestamp, post_author, post_intro, link, meta_k, meta_d) VALUES (?,?,?,?,?,?,?,?;");
  $stmt-&gt;bind_param("ssisssss", $post_title, $post_content, $post_timestamp, $post_author, $post_intro, $link, $meta_k, $meta_d);
  $stmt-&gt;execute();
  </code></pre>