Unknown: Your script possibly relies...

Bonjour,

Je suis présentement en train de déménager mon site chez un nouvel hébergeur.
Après quelques test les résultats semble concluant, sauf pour une page ou je doit enregistrer des login session je recoit alors ce message:


Warning: Cannot modify header information - headers already sent by (output started at /home/promore/public_html/petites_annonces/checklogin.php:2) in /home/promore/public_html/petites_annonces/checklogin.php on line 41

Warning: Cannot modify header information - headers already sent by (output started at /home/promore/public_html/petites_annonces/checklogin.php:2) in /home/promore/public_html/petites_annonces/checklogin.php on line 42

Warning: session_register() [function.session-register]: Cannot send session cache limiter - headers already sent (output started at /home/promore/public_html/petites_annonces/checklogin.php:2) in /home/promore/public_html/petites_annonces/checklogin.php on line 50

Warning: Cannot modify header information - headers already sent by (output started at /home/promore/public_html/petites_annonces/checklogin.php:2) in /home/promore/public_html/petites_annonces/checklogin.php on line 52

Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively in Unknown on line 0

Merci à l'avance! :)