Find shortcodes in WordPress Posts

shortcode_regex.php

<?php
  // Regular Expression to match [shortcodes].
  $regex = '(\[title(.*?)?\](.+?)?\[\/title\])';
  
  // Store them in an array
	preg_match( $regex, $content, $action_matches );
	
	// Remove them.
	preg_replace( $regex, '', $content );