title: In PHP/MySQL should I open multiple database connections or share 1?
body: <p>I am wanting to hear what others think about this?  Currently, I make a mysql database connection inside of a header type file that is then included in the top of every page of my site.  I then can run as many queries as I want on that 1 open connection.  IF the page is built from 6 files included and there is 15 different mysql queries, then they all would run on this 1 connection.  </p>
  
  <p>Now sometimes I see classes that make multiple connections, like 1 for each query.</p>
  
  <p>Is there any benefit of using one method over the other?  I think 1 connection is better then multiple but I could be wrong?</p>