Ticket #36455: 36455.9.diff

src/wp-admin/includes/file.php

@@ -1728 +1728 @@
         $from = trailingslashit( $from );
         $to   = trailingslashit( $to );
 
+        /**
+         * Filters whether to invalidate files in the PHP opcache
+         * after it is written during an upgrade.
+         *
+         * @since 5.5.0
+         *
+         * @param bool $invalidate Whether to invalidate. Default true.
+         */
+        $opcache_invalidate_allowed = function_exists( 'opcache_invalidate' ) && apply_filters( 'wp_opcache_invalidate_allowed', true );
+
         foreach ( (array) $dirlist as $filename => $fileinfo ) {
                 if ( in_array( $filename, $skip_list, true ) ) {
                         continue;
                 }
 
+                if ( $opcache_invalidate_allowed && in_array( pathinfo( $filename, PATHINFO_EXTENSION ), array( 'php', 'phtml' ), true ) ) {
+                        opcache_invalidate( $to . $filename );
+                }
+
                 if ( 'f' === $fileinfo['type'] ) {
                         if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) {
                                 // If copy failed, chmod file to 0644 and try again.

src/wp-admin/includes/update-core.php

@@ -1339 +1339 @@
         $from = trailingslashit( $from );
         $to   = trailingslashit( $to );
 
+        /** This filter is documented in wp-admin/includes/file.php */
+        $opcache_invalidate_allowed = function_exists( 'opcache_invalidate' ) && apply_filters( 'wp_opcache_invalidate_allowed', true );
+
         foreach ( (array) $dirlist as $filename => $fileinfo ) {
                 if ( in_array( $filename, $skip_list, true ) ) {
                         continue;
                 }
 
+                if ( $opcache_invalidate_allowed && in_array( pathinfo( $filename, PATHINFO_EXTENSION ), array( 'php', 'phtml' ), true ) ) {
+                        opcache_invalidate( $to . $filename );
+                }
+
                 if ( 'f' === $fileinfo['type'] ) {
                         if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) {
                                 // If copy failed, chmod file to 0644 and try again.