title: How to run composer without xdebug (when installed with homebrew)
body: <p>If you've installed PHP &amp; composer w/ homebrew and have xdebug enabled, you may see the following error:</p>
  
  <blockquote>
    <p>You are running composer with xdebug enabled. This has a major impact on runtime performance. See <a href="https://getcomposer.org/xdebug" rel="nofollow">https://getcomposer.org/xdebug</a></p>
  </blockquote>
  
  <p>There's an <a href="https://github.com/Homebrew/homebrew-php/issues/2937" rel="nofollow">open issue on homebrew-php</a> but no official resolution yet. That said, there is a temporary fix (see below).</p>