title: How to neatly check if 4 variables are the same?
body: <p>How would someone neatly check if 4 variables are the same?</p>
  
  <p>Obviously this wouldn't work:</p>
  
  <pre><code>if ($var1 === $var2 === $var3 === $var4)
  </code></pre>
  
  <p>But what would, without writing loads of code?</p>