Some errors with header or session.save_path, I'm not sure

only happen when i try to log-on at the Control Panel

[tacteanh]

Dear everyone,

I build an website which have a admin control panel.
But the problem is:
It works ok when i run on my localhost. But when i upload it on the real host. I have these errors when i try to log-on my control panel.
--------------------------
Warning: Cannot modify header information - headers already sent by (output started at /home/tacteanh/public_html/admin/login_authentication.php:40) in /home/tacteanh/public_html/admin/login_authentication.php on line 45

Warning: Unknown(): write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0
----------------------
Thanks for any help.
tacteanh

[Sarah Atkinson]

Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0

I think your host's php.ini file may need to be edited to allow sessions. if you can not change it you may want to contact your host.

[tacteanh]

Thanks for your msg.

I dont know much about php.ini and actually i can not modified php.ini at my host.

So if i can contact the host provider, what should i say to him? Can you tell me.

Thank you,
tacteanh

[Sarah Atkinson]

exsactly what you said on this board

[tacteanh]

OK, thanks.