title: Regular Expression to remove underscore and string
body: <p>I need to use PHP regex to remove '_normal' from the end of this url.</p>
  
  <p><a href="http://a0.twimg.com/profile_images/3707137637/8b020cf4023476238704a9fc40cdf445" rel="nofollow">http://a0.twimg.com/profile_images/3707137637/8b020cf4023476238704a9fc40cdf445</a><strong>_normal</strong>.jpeg</p>
  
  <p>so that it becomes</p>
  
  <p><a href="http://a0.twimg.com/profile_images/3707137637/8b020cf4023476238704a9fc40cdf445.jpeg" rel="nofollow">http://a0.twimg.com/profile_images/3707137637/8b020cf4023476238704a9fc40cdf445.jpeg</a>.</p>
  
  <p>I tried </p>
  
  <pre><code>$prof_img = preg_replace('_normal', '', $prof_img);
  </code></pre>
  
  <p>but the underscore seems to be throwing things off.</p>