title: Issues in isset and function calls
body: <p>This is the code below. I need the answer as set using this function call <code>newa</code> outside of the function.  I only get not set.</p>
  
  <pre><code>&lt;?php
  $home=1;
  newa();
  function newa(){
  if (isset($home)) {
  
      echo "set";
  }else{
      echo "not set";
  }
  }
  ?&gt;
  </code></pre>