class PHP

# File lib/php_http_build_query.rb, line 17
def hashify(object, parent_key = '')
  raise ArgumentError.new('This is made for serializing Hashes and Arrays only') unless (object.is_a?(Hash) or object.is_a?(Array) or parent_key.length > 0)

  result = {}
  case object
  when String, Symbol, Numeric
    result[parent_key] = object.to_s
  when Hash
    # Recursively call hashify, building closure-like state by
    # appending the current location in the tree as new "parent_key"
    # values.
    hashes = object.map do |key, value|
      if parent_key =~ /^[0-9]+/ or parent_key.length == 0
        new_parent_key = key.to_s
      else
        new_parent_key = parent_key + '[' + key.to_s + ']'
      end
      hashify(value, new_parent_key)
    end
    hash = hashes.reduce { |memo, hash| memo.merge hash }
    result.merge! hash
  when Enumerable
    # _Very_ similar to above, but iterating with "each_with_index"
    hashes = {}
    object.each_with_index do |value, index|
      if parent_key.length == 0
        new_parent_key = index.to_s
      else
        new_parent_key = parent_key + '[' + index.to_s + ']'
      end
      hashes.merge! hashify(value, new_parent_key)
    end
    result.merge! hashes
  else
    raise Exception.new("This should only be serializing Strings, Symbols, or Numerics.")
  end

  return result
end

# File lib/php_http_build_query.rb, line 7
def http_build_query(object)
  h = hashify(object)
  result = ""
  separator = '&'
  h.keys.sort.each do |key|
    result << (CGI.escape(key) + '=' + CGI.escape(h[key]) + separator)
  end
  result = result.sub(/#{separator}$/, '') # Remove the trailing k-v separator
  return result
end