title: When would you use the $this keyword in PHP?
body: <p>When would you use the <code>$this</code> keyword in PHP? From what I understand <code>$this</code> refers to the object created without knowing the objects name.</p>
  
  <p>Also the keyword <code>$this</code> can only be used within a method?</p>
  
  <p>An example would be great to show when you can use <code>$this</code>.</p>