Creating variables using symbolic references is a very bad idea for reasons that are discussed on this site almost every day. Creating variables using symbolic references and taking their names from user data in a CGI script creates a huge security risk on your server. Please don't use code like this on a server connected to the internet.

Why not put the values in a hash like this:

my %param;
foreach (param) {
  $param{$_} = param($_);
}

[download]

or (if you have multivalued CGI parameters)

my %param;
foreach (param) {
  # store all parameters in arrays initially
  push @{$param{$_}}, param($_);
}

foreach (keys %param) {
  # promote single element arrays
  $param{$_} = $param{$_}->[0] if @{param{$_}} == 1;
}

[download]
--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Creating vars from URI and printing %ENV by davorg
in thread Creating vars from URI and printing %ENV by hacker

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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! —
  • 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:
    & &amp;
    < &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.