title: How do I check if a string contains a specific word?
body: <p>Consider:</p>
  
  <pre><code>$a = 'How are you?';
  
  if ($a contains 'are')
      echo 'true';
  </code></pre>
  
  <p>Suppose I have the code above, what is the correct way to write the statement <code>if ($a contains 'are')</code>?</p>