title: How do I print out raw string which contain tags in PHP?
body: <p>For example:</p>
  
  <pre><code>$str="&lt;script&gt;alert('hello');&lt;/script&gt;";
  </code></pre>
  
  <p>If I use echo to print it out, it will pop up an alert window in the browser.</p>
  
  <p>How can I print out the raw string <code>&lt;script&gt;alert('hello');&lt;/script&gt;</code> in this case?</p>