Maybe the reason you can not see the stuff in "a.pl" is because you may need to use "print "Content-type: text/html\n\n";" before you print.
Example:
#!/usr/local/bin/perl -w use CGI qw(:standard); #my $name = undef; # is ok, but you'll get a warning if $name is blank +. my $name = param("name") || ''; # better for warn! print "Content-type: text/html\n\n"; # Setup the header for the browse +r print "value = ",$name, "\n";

Once you Get your code to work. I want you to remember to check the param() inputs before you print them, if its going to be used in a public web page!
As your "a.pl" sits now anyone could inject HTML and Javascript codes. that is a security risk if your going to let people you dont trust use the script.

Here is an Example of how to secure your param():
print "Content-type: text/html\n\n"; # Setup the header for the browse +r my $name = param("name") || ''; # Allow only numbers, letters and _ if ($name && $name !~ m/^[0-9A-Za-z_]+$/i) { print 'Error: Bad input Format'; exit; # Stop script }

If the code needs a number and no letters just check for numbers in that param().

Good Luck!


In reply to Re: get parameter from html page by SFLEX
in thread get parameter from html page by pritoshpandey

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.