"N" number of parameters using cgi

Question

How do I get the number "N" using cgi?

Current I am using the code below. But I don't know the name of the parameter. In this case, how to do it?

Code: script.cgi

use strict;
use CGI;
my $query = new CGI;
my $paramValue1 = $query->param('name1');
my $paramValue2 = $query->param('name2');
.....

Enter the URL:

http://host/cgi-bin/script.cgi?name1=value1&name2=value2&.........

Output value:

value1,value2,.....

Please help me with this. Thank.

+3

Vasanth 18 nov. 14 at 17:05

3 answers

Below is bad practice:

my $name1 = $query->param('name1');
my $name2 = $query->param('name2');

Use an array!

my @names;
push @names, $query->param('name1');
push @names, $query->param('name2');

To your question: how to avoid hardcoding all indexes, which is especially important since the number of names is variable.

$query->param

without arguments returns a list of supplied parameters, so it becomes a matter of filtering and sorting. You want the following:

my @names =
   map { $query->param('name'.$_) }
      sort { $a <=> $b }
         map { /^name(\d+)\z/ ? $1 : () }
            $query->param;

It would make more sense if the URL was

http://host/cgi-bin/script.cgi?name=value1&name=value2&...

Because if you have this url you could just use

my @names = $query->param('name');

+3

ikegami 18 nov. 14 at 17:18

If you want to load parameters into a hash, the shortest / cleanest method would be using the Vars () method.

my $query = CGI->new;
my %param = $query->Vars;

0

Ron Bergin 18 nov. 14 at 17:12

Dry27 · Accepted Answer · 2014-11-18T17:06:28+0000

To get all form names,

my @names = $query->param;

Filling in the hash manually,

my %param;
$param{$_} = $query->param($_) for $query->param;

Update

my @values = map $query->param($_), $query->param;