PHP/MySQL: Should I close the database connection before or after redirecting the browser?

Is there a difference?  Is one of theses preferable?  If I close the database connection before redirecting the header, I am worried that the process could seem slower.  On the other hand, if redirect the browser before closing the database connection , I am worried that the database connection might not actually get closed!

<php
  mysql_close($crm_db);
  header('Location: ' . (!empty($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') .'/', true, 302);
  exit;
?>

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<?php
 header('Location: ' . (!empty($_SERVER['HTTPS']) ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] .  rtrim(dirname($_SERVER['PHP_SELF']), '/\\') .'/', true, 302);
 mysql_close($crm_db);
 exit;
?>

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skijAsked:
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Ray PaseurCommented:
The database connection will be closed by the PHP script termination process.  You almost never need to close it.  If you really want to close it, close it before the header() because you don't know how long your script will remain alive after you've told the browser to redirect.
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