>perl 848064_xyz.pl 'egal("20090316","7006")'


         'egal(20090316,7006)' is $param at line 10

'egal(20090316,7006)'
        Line 11 $param: |'egal(20090316,7006)'|

 At 13, $test: 'egal(20090316,7006)'

Use of uninitialized value in concatenation (.) or string at 848064_xyz.pl line 22.

++++
>

##</code><code>##

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

# OP says: Now I am calling the script :
# 001: perl xyz.pl 'egal("20090316","7006")'

my $param = shift;
chomp $param;
print "\n\n\t $param is \$param at line 10\n\n";
eval print $param;
print "\n\tLine 11 \$param: |$param| \n";

sub egal {
        my $result;
        my @arg = @_;

        my $test = $arg[0];
		print "\n At 13, \$test: $test\n\n";

        my @test = grep (/$test/i, @arg);
		print "\t $test[0] \n";
        print "++++";

        if ($#test == $#arg)
        {
                $result = 'true';
        }
        else
        {
                $result = 'false';
        }
        return $result;
		print " $result\n";
}


egal($param);         # call the sub!