title: PHP: How to check if ANY are located in string?
body: <p>I am trying to see if any of a list of items are located in a PHP string. I know how to use <code>strpos</code> to test against one item:</p>
  
  <pre><code>if (strpos($string, 'abc') !== FALSE) {
  </code></pre>
  
  <p>But, how would I test, for example, if either 'abc' or 'def' appear in the $string?</p>