Ticket #15030: meta_recursive_unserialize.diff

wp-includes/functions.php

@@ -255 +255 @@
 }
 
 /**
+ * Callback for array_walk_recursive when unserializing meta data that was requested without specifying a meta key
+ *
+ * @param string $original passed by reference, maybe unserialize original, if it is needed.
+ * @return mixed Unserialized data can be any type.
+ */
+function maybe_unserialize_callback( &$original ) {
+        return $original = maybe_unserialize( $original );
+}
+
+/**
  * Unserialize value only if it was serialized.
  *
  * @since 2.0.0

wp-includes/meta.php

@@ -478 +478 @@
                 $meta_cache = $meta_cache[$object_id];
         }
 
-        if ( !$meta_key )
+        if ( !$meta_key ) {
+                if ( is_array( $meta_cache ) ) {
+                        array_walk_recursive( $meta_cache, 'maybe_unserialize_callback');
+                }
+
                 return $meta_cache;
+        }
 
         if ( isset($meta_cache[$meta_key]) ) {
                 if ( $single )