Cannot Send Session Cache Limiter

PHP
1

[COLOR=“#0000CD”]Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent

(output started at /home/skyman/reservationlocation.com/tour_vehicles/head.php:10)

in /home/skyman/reservationlocation.com/tour_vehicles/start.php on line 2[/COLOR]

Head.php has echo statement.

if(session_id() == ‘’) // session isn’t started
{include ‘start.php’;}

Start.php includes session_start();

I do not know how to get rid of this error. Thank you.

2

The “headers already sent” problem is often caused by “unseen” whitespace before the session function is called.

Any output at all - including whitespace - before session is called will give the “headers already sent” message.

3

I pulled the

session_start();

out of an “include” and put it as the opening line after “<?php” and the problem went away.

Seems the programmers of php should make it less finicky.

4

What the relationship is between file head.php and start.php?