Re-naming Admin creates php errors

[teragram]

I have twice created a new installation of Zen Cart 1.3.8a on GoDaddy linux hosting. This installation has the latest patches applied. Re-naming the admin folder has caused the following php errors when logging in to the admin control panel.

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by...
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent...
Warning: Cannot modify header information - headers already sent by (output started at...

AND restoring the original un-changed configure.php file and renaming the folder back to "admin" triggers the errors also.

I have set the read/write status on the configure.php to 444.

I used the directions for re-naming the admin folder found at the following url:
https://www.zen-cart.com/tutorials/index.php?article=33

What have I missed?

Thank you,
Teragram

[kuroi]

In your changes you have created a syntax error which is causing premature output from your site. The warning that you quote above, usually tells you where this output is coming from, but seems to have been chopped off in your post.

[teragram]

In your changes you have created a syntax error which is causing premature output from your site. The warning that you quote above, usually tells you where this output is coming from, but seems to have been chopped off in your post.

I thought that might be the case the first time, which is why I un-installed and re-installed the application. It does not explain why the un-touched configure.php document also generates the same errors.
And I was VERY careful to only change the the /admin/ parts. Using TextWrangler set to document type php showed no syntax errors.

Teragram

[kuroi]

The warning that you quote above, usually tells you where this output is coming from, but seems to have been chopped off in your post.

..............?

[teragram]

..............?

Here are the errors messages with the sensitive data expunged:
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at ...shop/admin/includes/configure.php:183) in ...shop/includes/functions/sessions.php on line 108

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at .../shop/admin/includes/configure.php:183) in ...shop/includes/functions/sessions.php on line 108

Warning: Cannot modify header information - headers already sent by (output started at ...shop/admin/includes/configure.php:183) in.../shop/admin/includes/init_includes/init_templates.php on line 36

Line 183 in the configure.php document is after the closing ?>
It is a blank line. Could the blank line be causing the problem?

[teragram]

Thank you kuroi,
It was indeed a blank line at the end of the php code that was creating the problem.

Teragram

[kuroi]

The warning tells us that there is a problem at the end of your configure.php file (as you have confirmed). As the file is normally only half this length, the problem is probably due to a problem with the way in which the app which you are using to upload the file is configured. It's probably causing the file to be double-spaced by mishandling the invisible line end characters.

If your configure file has a closing php tag at the end ("?>") then the problem would be that this doubling up has resulting in there being a non-printing character output after that tag. In which case, counter-intuitive though it may sound, simply deleting the tag would also have resolved the problem for you. In general, it's a good idea nowadays to leave the final php closing tag off the end of files specifically to avoid the problem that you had.

https://www.zen-cart.com/tutorials/i...hp?article=313
https://www.zen-cart.com/tutorials/index.php?article=87