my @gene1 = $query->param('GS1');

This took parameter GS1 from the form and put it into the first element of array @gene1.

@gene1 = split ('', $gene1);

This takes scalar $gene1 and attempts to split it into the characters it contains. Since no assigment has been made to $gene1, you get an empty result back. This clears the array @gene1. Also, I doubt this code compiles since you never declared $gene1 and your code include use strict;. Are you getting http 500 errors?

print STDOUT $gene[0];

This attempts to print an element from array @gene which has never been declared nor assigned to. Of course, nothing gets printed and this should also cause a compilation error due to not being declared.

Maybe what you wanted was this.

my $gene1 = $query->param('GS1');
my @gene1 = split('',$gene1);
print STDOUT $gene1[0];

[download]

This is still somewhat broken since you output a header declaring your document to be text/html but you don't have any html tags in the output.

---
print map { my ($m)=1<<hex($_)&11?' ':'';
$m.=substr('AHJPacehklnorstu',hex($_),1) }
split //,'2fde0abe76c36c914586c';

[download]

In reply to Re: Reading multiple values from a selection with CGI.pm by pfaut
in thread Reading multiple values from a selection with CGI.pm by Anonymous Monk

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