title: Defining multiple function argument types in PHP
body: <p>Is it possible to define a function argument as multiple possible types? For example, a function may take a string or an integer to accomplish something. Is it possible to somehow define it like this?</p>
  
  <pre><code>    function something(int|string $token) {}
  </code></pre>
  
  <p>Or is only one type per argument supported?</p>
  
  <p>(mind you, I know I can filter input later on, I just like to have my arguments typed)</p>