I am running a script that depends on variables from an external process. I've written a foreach loop that determines if each variable is defined and if so then sets a local variable. The problem is the loop is only setting numeric variables. The non-numeric values are seemingly discarded.

#!/usr/bin/perl
#
use strict;
use warnings;

my $NB_ORA_CINC;
my $NB_ORA_CLIENT;
my @NB_VAR_LIST=("NB_ORA_CINC", "NB_ORA_CLIENT");
my $NB_VAR;

foreach $NB_VAR ( @NB_VAR_LIST ) {
   if ( defined $ENV{$NB_VAR} ) {
      print "Variable $NB_VAR is $ENV{${NB_VAR}}\n";
      eval("\$${NB_VAR} = $ENV{${NB_VAR}}");warn $@ if $@;
   }
}

if ( defined $NB_ORA_CINC )   { print "\$NB_ORA_CINC   is $NB_ORA_CINC
+\n"; }
if ( defined $NB_ORA_CLIENT ) { print "\$NB_ORA_CLIENT is $NB_ORA_CLIE
+NT\n"; }

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The result is:

Variable NB_ORA_CINC is 1
Variable NB_ORA_CLIENT is client01
$NB_ORA_CINC   is 1

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I'm simulating the external process by defining the variables in a shell script that executes the perl script. I don't understand why the loop appears to be discarding the alphabetic character. Any help would be appreciated. Thanks Update: I added the "warn $@ if $@;" to my loop, thank you for the tip,and Perl is reporting "Bareword "client01" not allowed while "strict subs" in use at (eval 3)". When I comment out 'use strict;' the script completes as expected. At this point I'm not really sure how to remediate the problem so that it works while using 'use strict;'.

In reply to Why is my loop dropping alphabetic strings? by DiabeticJim

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