Update WordPress/Docs/PHP/PregQuoteDelimiterStandard.xml

Co-authored-by: Juliette <[email protected]>

Author: rodrigoprimo

WordPress/Docs/PHP/PregQuoteDelimiterStandard.xml

@@ -21,6 +21,7 @@ preg_match(
         </code>
         <code title="Invalid: The delimiter parameter is missing.">
         <![CDATA[
+// $input = 'my #1 fan!';
 $quoted_input = preg_quote( $input<em></em> );
 preg_match(
     <em>'#^' . $quoted_input . '#i'</em>,