如果您使用的是类，那么

class MyShortcode {

static $instance = 0;

    function __construct($args = array()) {
      add_action( \'init\', array(&$this, \'init\') );
    }

    function init() {
      add_shortcode(\'myshortcode\', array(&$this, \'shortcode\'));
    }

    static function shortcode($atts) {
      //this is the code of your shortcode

      // you can increment your counter
      self::$instance++;

    }

}