Ticket #46437: 46437.diff

src/wp-admin/includes/schema.php

@@ -1316 +1316 @@
                 return;
         }
 
+        /**
+         * Filters meta for a site on creation.
+         *
+         * @since 5.2.0
+         *
+         * @param array $meta   Associative array of site meta keys and values to be inserted.
+         * @param int   $site_id ID of site to populate.
+         */
+        $site_meta = apply_filters( 'populate_site_meta', $meta, $site_id );
+
         $insert = '';
-        foreach ( $meta as $meta_key => $meta_value ) {
+        foreach ( $site_meta as $meta_key => $meta_value ) {
                 if ( is_array( $meta_value ) ) {
                         $meta_value = serialize( $meta_value );
                 }