title: run php code on phpFiddle
body: <p>I am new to php and got a silly question to ask. I am trying to get result displayed on this site but it was blank, did I do anything wrong, was php code tested differently than javascript? How do you run the function you created with variables and display the result? Do I just put down the function name with variable values and then hit run php??</p>
  
  <pre><code>  &lt;?php
     function isVow(array $a)
      {
         return str_replace(['97', '101', '105', '111', '117'], ['a', 'e','i', 'o', 'u'], $a);
  
       }
  
        isVow(['97','101']);
  
       ?&gt;
  </code></pre>