public static function get_instance() { if (is_null(self::$_instance)) { self::$_instance = new self(); } return self::$_instance; }
public function __construct() { parent::__construct(); add_action('wp_loaded', array($this, 'register_plugin_for_activation'), 99); add_action('admin_init', array($this, 'register_plugin_for_updates')); add_filter('ywcps_animate_styles', array($this, 'add_animation_premium'), 10, 1); add_action('admin_init', array($this, 'add_free_slider_in_table')); add_action('admin_enqueue_scripts', array($this, 'include_admin_premium_style_script')); }