Anagram on Ruby

anagram.rb

def is_anagram?(first, second)
  first = first.split('').sort.join # get sorted string from words characters
  second = second.split('').sort.join

  matches = first.length == second.length # check match by length
  return if !matches # return if words have different length

  
  first.length.times do |i| # check every character in sorted string
    matches = first[i] == second[i]
    break if !matches       # break loop if characters don't equal 
  end
  
  matches
end