Global variable before and after `end` - ruby

Question

I am parsing a PDF file online in order to extract a text. The 2 completes codes:
First
require 'open-uri'
require "net/http"
require 'pdf/reader'
module OpenSSL
module SSL
remove_const :VERIFY_PEER
end
end
OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE
io = open('https://www.mtholyoke.edu/sites/default/files/registrar/bulletin/docs/dept_econ.pdf')
reader = PDF::Reader.new(io)
reader.pages.each do |page|
iso = page.text
$var = iso.scan(/Economics[\s\S]*Overview/)
p $var
end
Second
require 'open-uri'
require "net/http"
require 'pdf/reader'
module OpenSSL
module SSL
remove_const :VERIFY_PEER
end
end
OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE
io = open('https://www.mtholyoke.edu/sites/default/files/registrar/bulletin/docs/dept_econ.pdf')
reader = PDF::Reader.new(io)
reader.pages.each do |page|
iso = page.text
$var = iso.scan(/Economics[\s\S]*Overview/)
end
p $var
It appears that when I use p $var after end, I have truncated the result unlike the first code. Why does putting p $var after end give a different result from putting it before?
In my web app, I do need to do put it after the end and have the same result as the first code. How can I do so?

Answer 1

tmp = reader.pages.map { |p| p.text.scan(/Economics[\s\S]*Overview/) }
tmp now contains a collection of all the scan results.
puts tmp.join("\n")
Will print them all out with newlines between each match.
Although won't that just print a wad of "Economics Overview"?
If you want to collect the pages themselves it's different code.