What's happening is that param() isn't actually returning undef - it's returning an empty list. As it says in the documentation for CGI:

If the parameter does not exist at all, then param() will return undef in a scalar context, and the empty list in a list context.

So your keys and values get offset by one. Try this little example for an illustration of the effect of this:

my %hash = ( foo => 1, bar => 2, baz => (), qux => 3);
print keys %hash;
[download]

What this means for you is that you need to call the param() method in scalar context. You can either do it directly:

my %data  = (

'email'=>scalar $cgi->param('user_email'),
'name'=>scalar $cgi->param('user_name'),
'cell_phone'=>scalar $cgi->param('user_cell_phone'),
'home_phone'=>scalar $cgi->param('user_home_phone'),
'work_phone'=>scalar $cgi->param('user_work_phone'),
);
[download]

or you can try to get clever by doing something like this:

my %data = ('email' => 'user_email', 'name' => 'user_name',
            'cell_phone' => 'user_cell_phone', 'home_phone' => 'user_h
+ome_phone',
            'work_phone' => 'user_work_phone');
$_ = $cgi->param($_) for values %data;
[download]

This takes advantage of the fact that you can modify hash values in place. Also, the scalar context is automatic because it's an assignment to a scalar value, so you don't need to specify it.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.