title: Replace all links in a file
body: <p>i need some help.
  i have a huge php document that contain a lot of links inside it.
  I need to replace links with #
  for example:</p>
  
  <pre><code>Original link: text....&lt;a href="orig-link"&gt; Link text &lt;/a&gt; other text .....
  
  
  How i need it be:  text....&lt;a href="#"&gt; Link text &lt;/a&gt; other text .....
  </code></pre>
  
  <p>so i need to change only the link nothing else, the link text etc should stay as it is.</p>
  
  <p>Thank you for reading.</p>