title: how to understand "can't connect" mysql error messages?
body: <p>I have the following error message:</p>
  
  <blockquote>
    <p>SQLSTATE[HY000] [2003] Can't connect to MySQL server on
    '192.168.50.45' (4)</p>
  </blockquote>
  
  <p>How would I parse this (I have HY000, I have 2003 and I have the (4).</p>