title: PHP if statements with multiple values
body: <p>Is there a shorter way of writing this?</p>
  
  <pre><code>&lt;? 
  if($_GET['id']==1 ||
  $_GET['id']==3 ||
  $_GET['id']==4 || 
  $_GET['id']==5)
  {echo 'does it really have to be this explicit?'};
  ?&gt;
  </code></pre>
  
  <p>Something like this perhaps?</p>
  
  <pre><code>&lt;?
  if($_GET['id']==1 || 3 || 4 || 5){echo 'this is much shorter'};
  ?&gt;
  </code></pre>