whats the problem with this line?

ketaki has asked for the wisdom of the Perl Monks concerning the following question:

whats the problem with this statement...

        $body.= "<br><br>The excel file you just uploaded conatins $co
+ls columns<br><br>";
[download]

when i make this line into a comment, then the program runs and gives output, but when i remove the comment (i mean when the command is executed) then it gives me a error 500: Script Execution Failure any help? ketaki

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Re: whats the problem with this line? by pc88mxer (Vicar) on Jul 17, 2008 at 14:42 UTC
What does your server error log say? If you can't read your error log, try putting: `use CGI::Carp qw(fatalsToBrowser);` [download] in your script. Also, what kind of thing is `$cols`? Is it a simple scalar, or it is an object that has a stringify method? We will probably need to see more of your script.	[reply] [d/l] [select]
Re: whats the problem with this line? by marto (Cardinal) on Jul 17, 2008 at 14:43 UTC
Your webserver error log should give you more hints as to what is wrong (error_log if you are running Apache by the way). Does the script run properly from the command line? Does `$cols` exist and contain what you think it should contain? Perhaps you should read some of the posts under CGI Programming from the tutorials section of this site. Martin	[reply] [d/l]
Re: whats the problem with this line? by Perlbotics (Archbishop) on Jul 17, 2008 at 14:44 UTC
Maybe `$cols` is not declared while in a `use strict` context?	[reply] [d/l] [select]
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Re: whats the problem with this line? by LesleyB (Friar) on Jul 17, 2008 at 15:35 UTC
Apart from the spelling mistake ;) ... you could use `#!/usr/bin/perl -wT;` or at least `use warnings;` to help you debug your code. This will output warnings as well as error messages to your error log file - /var/log/apache2/error.log on my system.	[reply] [d/l] [select]