Fixed warning array_merge on multisite

Warning: array_merge(): Argument #1 is not an array in
wp-content/plugins/italy-cookie-choices/admin/class-italy-cookie-choices-admin.php
on line 60

admin/class-italy-cookie-choices-admin-pointer.php

@@ -167,4 +167,4 @@ function _reset_pointer( $id = 'me' ) {
 		update_user_meta( get_current_user_id(), 'dismissed_wp_pointers', $meta );
 	}
 
-}
+}

admin/class-italy-cookie-choices-admin.php

@@ -55,9 +55,8 @@ public function __construct(){
 
             /**
              * Get all posts and pages object and merge for jQuery autocomplete function
-             * @var array
              */
-            $this->post_and_page_array = array_merge(get_pages('numberposts=-1'), get_posts('numberposts=-1')); 
+            $this->get_post_and_page_array();
 
             /**
              * Add Admin menù page
@@ -82,6 +81,20 @@ public function __construct(){
 
         }
 
+        /**
+         * Get all posts and pages object and merge for jQuery autocomplete function
+         * @return array Return an array with all posts and pages
+         */
+        public function get_post_and_page_array(){
+
+            $get_pages = ( is_array( get_pages('numberposts=-1') ) ) ? get_pages('numberposts=-1') : array();
+
+            $get_posts = ( is_array( get_posts('numberposts=-1') ) ) ? get_posts('numberposts=-1') : array();
+
+            $this->post_and_page_array = array_merge($get_pages, $get_posts); 
+
+        }
+
 
         /**
          * Add page for italy-cookie-choices admin page

classes/class-italy-cookie-choices-front-end.php

@@ -758,4 +758,4 @@ private function _display_cookie(){
         }
 
     }// class
-}//endif
+}//endif