title: What does while (true){ mean in PHP?
body: <p>I've seen this code, and I've no idea what it means.</p>
  
  <pre><code>while(true){
      echo "Hello world";
  }
  </code></pre>
  
  <p>I know what a while loop is, but what does while(true) mean? How many times will it executed. Is this not an infinite loop?</p>