title: regex (preg_replace) match word except where it starts a sentence/paragraph
body: <p>Im currently scratching my head to figure out a way to match a word except where it starts a sentence or paragraph.</p>
  
  <p>I have a large amount of text where i need to lowercase the start of a set word, apart from if it starts a sentence</p>
  
  <p>so far i have</p>
  
  <pre><code>preg_replace('/Word\b/','word',$text);
  </code></pre>
  
  <p>Can someone please help with the exclusion pattern of starting a sentence</p>
  
  <p>thanks</p>