Ticket #49691: 49691.diff

src/wp-admin/includes/file.php

@@ -498 +498 @@
         if ( false === $written ) {
                 return new WP_Error( 'unable_to_write', __( 'Unable to write to file.' ) );
         }
-        if ( 'php' === $extension && function_exists( 'opcache_invalidate' ) ) {
+        if ( 'php' === $extension && function_exists( 'opcache_invalidate' ) && ( '' === ini_get( 'opcache.restrict_api' ) || strpos( ini_get( 'opcache.restrict_api' ), 'wp-admin' ) ) ) {
                 opcache_invalidate( $real_file, true );
         }
 
@@ -608 +608 @@
 
                         // Roll-back file change.
                         file_put_contents( $real_file, $previous_content );
-                        if ( function_exists( 'opcache_invalidate' ) ) {
+                        if ( function_exists( 'opcache_invalidate' ) && ( '' === ini_get( 'opcache.restrict_api' ) || strpos( ini_get( 'opcache.restrict_api' ), 'wp-admin' ) ) ) {
                                 opcache_invalidate( $real_file, true );
                         }