Perl - Parse URL to get a GET Parameter Value - perl

Question

How to get the value of a parameter code using URI::URL Perl module?
From this link:
http://www.someaddress.com/index.html?test=value&code=INT_12345
It can be done using URI::URL or URI (I know the first one is kind of obsolete). Thanks in advance.

Answer 1

Create a URI object and use the query_form method to get the key/value pairs for the query. If you know that the code parameter is only specified once, you can do it like this:
my $uri = URI->new("http://www.someaddress.com/index.html?test=value&code=INT_12345");
my %query = $uri->query_form;
print $query{code};
Alternatively you can use URI::QueryParam whichs adds soem aditional methods to the URI object:
my $uri = URI->new("http://www.someaddress.com/index.html?test=value&code=INT_12345");
print $uri->query_param("code");

Answer 2

use URI;
my $uri = URI->new("http://someaddr.com/index.html?test=FIRST&test=SECOND&code=INT_12345");
my %query = $uri->query_form;
use Data::Dumper;
print Dumper \%query;
We can see:
$VAR1 = {
'test' => 'SECOND',
'code' => 'INT_12345'
};
Unfortunately, this result is wrong.
There is possible solution:
use URI::Escape;
sub parse_query {
my ( $query, $params ) = #_;
$params ||= {};
foreach $var ( split( /&/, $query ) ){
my ( $k, $v ) = split( /=/, $var );
$k = uri_unescape $k;
$v = uri_unescape $v;
if( exists $params->{$k} ) {
if( 'ARRAY' eq ref $params->{$k} ) {
push #{ $params->{$k} }, $v;
} else {
$params->{$k} = [ $params->{$k}, $v ];
}
} else {
$params->{$k} = $v;
}
}
return $params;
}