# File lib/automateit/package_manager/pecl.rb, line 29
  def installed?(*packages)
    return _installed_helper?(*packages) do |list, opts|
      all_installed = get_installed_packages().keys.collect {|pkg| pkg.downcase}

      result = []
      list.each do |pkg|
        pkg_without_channel = pkg.gsub(%r{^[^/]+/}, '').downcase
        result.push pkg if all_installed.include?(pkg_without_channel)
      end

      result
    end
  end