title: How to instruct grunt HTMLmin to ignore PHP markup
body: <p>I am using <a href="https://github.com/gruntjs/grunt-contrib-htmlmin" rel="nofollow">HTMLmin</a> in my grunt.js workflow to minify my HTML.</p>
  
  <p>I have a few files that also include PHP markup. For example:</p>
  
  <pre><code>&lt;a href="&lt;?php echo //code ?&gt;"&gt;link&lt;/a&gt;
  </code></pre>
  
  <p>HTMLmin doesn't parse this correctly, and instead throws an exception error:</p>
  
  <pre><code>Warning: [filename]
  Parse Error: &lt;a href="&lt;?php echo //code ?&gt;"&gt;link&lt;/a&gt;
  Aborted due to warnings.
  </code></pre>
  
  <p>Is there anyway to instruct HTMLmin to ignore PHP markup? I've looked through the docs but don't see any obvious answer.</p>