title: What are fragment URLs and why to use them?
body: <p>I am new to PHP Development.</p>
  <p>Today I came across the interesting topic of URL fragments, specifically the <code>#</code> part of URLs.</p>
  <p>I searched and found that it's like</p>
  <pre><code>www.example.com/foo.html#bar
  </code></pre>
  <p>But I don't understand why this <code>#bar</code> is needed. Or how to read it in PHP?</p>