j'obtiens ce message
Warning: Cannot send session cookie - headers already sent by (output started at c:\program files\easyphp\www\ceramiques\controle\sujetupload1.php:5) in c:\program files\easyphp\www\ceramiques\controle\sujetupload1.php on line 15

Warning: Cannot send session cache limiter - headers already sent (output started at c:\program files\easyphp\www\ceramiques\controle\sujetupload1.php:5) in c:\program files\easyphp\www\ceramiques\controle\sujetupload1.php on line 15
lorsque j'ecris session_start();
pouvez vous m'aider