Hi all.

In an effort to improve my knowledge / skill with writing CGI applications, I am experimenting with the following example from one of my perl related textbooks: 

#!c:\perl\perl.exe

use strict;
use warnings;
use CGI qw( fatalsToBrowser );
use CGI qw ( :standard );
use Fcntl qw( :flock );

my @vars = 
   qw( REMOTE_ADDR REMOTE_PORT REQUEST_URI QUERY_STRING );
my @stuff = @ENV{ @vars };
my $info = join( " | ", @stuff );

open( FILE, "+>>log.txt" )
   or die( "Could not open log.txt: $!" );
flock( FILE, LOCK_EX )
   or die( "Could not get exclusive lock: $!" );
print( FILE "$info\n\n" );
flock( FILE, LOCK_UN ) or die( "Could not unlock file: $!" );

close( FILE );

if ( $stuff[3] ne "" ) {
   print( header( -Refresh=> '5; URL=http://www.google.com' ) );
   print( start_html( "log.txt" ) );
   print( h1( "Welcome to my web site , $stuff[3]!\n" ) );
   print( p( i( "You will now be redirected to our home page." ) ) );
}
else {
   print( header() );
   print( start_html( "log.txt" ) );
   print( h1( "Please add a \"?\" and your name to the URL.\n" ) );
}

print( end_html() );

[download]

The errors I am receiving are:
Use of uninitialized value in join or string at fig10_11.pl line 13.
Use of uninitialized value in join or string at fig10_11.pl line 13.
Use of uninitialized value in join or string at fig10_11.pl line 13.
Use of uninitialized value in join or string at fig10_11.pl line 13.
flock() unimplemented on this platform at fig10_11.pl line 17.


I am using a win32 machine, Apache 1.3.20 w/ mod_perl and ActivePerl ( 5.6.1 ).
Thanks,
-Katie.

In reply to Problem with CGI script. by DigitalKitty

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