[multisite] Improve retrieval of individual‑site info in a multisite … (#802)

* [multisite] Adapt a simplified version of the approach from the `feature/swas/restore_blog_fix_alt_exploration` branch.

Author: fajardoleo

includes/class-freemius.php

@@ -15777,6 +15777,10 @@ static function get_sites_blog_ids( $sites ) {
         function get_site_info( $site = null, $load_registration = false ) {
             $this->_logger->entrance();
 
+            $fs_hook_snapshot = new FS_Hook_Snapshot();
+            // Remove all filters from `switch_blog`.
+            $fs_hook_snapshot->remove( 'switch_blog' );
+
             $switched = false;
 
             $registration_date = null;
@@ -15836,6 +15840,9 @@ function get_site_info( $site = null, $load_registration = false ) {
                 restore_current_blog();
             }
 
+            // Add the filters back to `switch_blog`.
+            $fs_hook_snapshot->restore( 'switch_blog' );
+
             return $info;
         }
 

includes/class-fs-hook-snapshot.php

@@ -0,0 +1,45 @@
+<?php
+	/**
+	 * @package   Freemius
+	 * @copyright Copyright (c) 2025, Freemius, Inc.
+	 * @license   https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3
+	 * @since     2.12.2
+	 */
+
+	if ( ! defined( 'ABSPATH' ) ) {
+		exit;
+	}
+
+	/**
+	 * Class FS_Hook_Snapshot
+	 *
+	 * This class allows you to take a snapshot of the current actions attached to a WordPress hook, remove them, and restore them later.
+	 */
+	class FS_Hook_Snapshot {
+
+		private $removed_actions = array();
+
+		/**
+		 * Remove all actions from a given hook and store them for later restoration.
+		 */
+		public function remove( $hook ) {
+			global $wp_filter;
+
+			if ( ! empty( $wp_filter ) && isset( $wp_filter[ $hook ] ) ) {
+				$this->removed_actions[ $hook ] = $wp_filter[ $hook ];
+				unset( $wp_filter[ $hook ] );
+			}
+		}
+
+		/**
+		 * Restore previously removed actions for a given hook.
+		 */
+		public function restore( $hook ) {
+			global $wp_filter;
+
+			if ( ! empty( $wp_filter ) && isset( $this->removed_actions[ $hook ] ) ) {
+				$wp_filter[ $hook ] = $this->removed_actions[ $hook ];
+				unset( $this->removed_actions[ $hook ] );
+			}
+		}
+	}

require.php

@@ -58,4 +58,5 @@
     require_once WP_FS__DIR_INCLUDES . '/class-fs-admin-notices.php';
 	require_once WP_FS__DIR_INCLUDES . '/class-freemius-abstract.php';
 	require_once WP_FS__DIR_INCLUDES . '/sdk/Exceptions/Exception.php';
+	require_once WP_FS__DIR_INCLUDES . '/class-fs-hook-snapshot.php';
 	require_once WP_FS__DIR_INCLUDES . '/class-freemius.php';