/**
  * Maybe fixes the broken migration.
  *
  * @since 2.3.9.6
  *
  * @return null Return early if not fixing the broken migration
  */
 public function maybe_fix_migration()
 {
     // Check if user pressed 'Fix' button and nonce is valid
     if (!isset($_POST['soliloquy-serialization-submit'])) {
         return;
     }
     if (!wp_verify_nonce($_POST['soliloquy-serialization-nonce'], 'soliloquy-serialization-nonce')) {
         return;
     }
     // If here, fix potentially broken migration
     // Get WPDB and serialization class
     global $wpdb, $fixedSliders;
     require plugin_dir_path(__FILE__) . 'serialization.php';
     $instance = Soliloquy_Serialization_Admin::get_instance();
     // Keep count of the number of sliders that get fixed
     $fixedSliders = 0;
     // Query to get all Soliloquy CPTs
     $sliders = new WP_Query(array('post_type' => 'soliloquy', 'post_status' => 'any', 'posts_per_page' => -1));
     // Iterate through sliders
     if ($sliders->posts) {
         foreach ($sliders->posts as $slider) {
             // Attempt to get slider data
             $slider_data = get_post_meta($slider->ID, '_sol_slider_data', true);
             if (is_array($slider_data)) {
                 // Nothing to fix here, continue
                 continue;
             }
             // Need to fix the broken serialized string for this slider
             // Get raw string from DB
             $query = $wpdb->prepare("\tSELECT meta_value\n\t\t\t\t\t        \t\t\t\tFROM " . $wpdb->prefix . "postmeta\n\t\t\t\t\t        \t\t\t\tWHERE post_id = %d\n\t\t\t\t\t        \t\t\t\tAND meta_key = %s\n\t\t\t\t\t        \t\t\t\tLIMIT 1", $slider->ID, '_sol_slider_data');
             $raw_slider_data = $wpdb->get_row($query);
             // Do the fix, which returns an unserialized array
             $slider_data = $instance->fix_serialized_string($raw_slider_data->meta_value);
             // Check we now have an array of unserialized data
             if (is_array($slider_data)) {
                 update_post_meta($slider->ID, '_sol_slider_data', $slider_data);
                 $fixedSliders++;
             }
         }
     }
     // Output an admin notice so the user knows what happened
     add_action('admin_notices', array($this, 'fixed_migration'));
 }
 /**
  * Returns the singleton instance of the class.
  *
  * @since 2.3.9.6
  *
  * @return object The Soliloquy_Serialization_Admin object.
  */
 public static function get_instance()
 {
     if (!isset(self::$instance) && !self::$instance instanceof Soliloquy_Serialization_Admin) {
         self::$instance = new Soliloquy_Serialization_Admin();
     }
     return self::$instance;
 }