title: Laravel, what can each() function do?
body: <p>I have no specific work to do, just want to know what each() can do.
  I have googled, and saw this post: <a href="https://github.com/laravel/framework/issues/1380" rel="noreferrer">https://github.com/laravel/framework/issues/1380</a><br>
  It says </p>
  
  <blockquote>
    <p>each is there to perform some operations on all items, that's all
    there is to it and that is what each is already doing.</p>
  </blockquote>
  
  <p>What are the operations? </p>