--- a/wp/wp-includes/class-json.php	Tue Dec 15 15:52:01 2020 +0100
+++ b/wp/wp-includes/class-json.php	Wed Sep 21 18:19:35 2022 +0200
@@ -1,5 +1,5 @@
 <?php
-_deprecated_file( basename( __FILE__ ), '5.3.0', null, 'The PHP native JSON extension is now a requirement.' );
+_deprecated_file( basename( __FILE__ ), '5.3.0', '', 'The PHP native JSON extension is now a requirement.' );
 
 if ( ! class_exists( 'Services_JSON' ) ) :
 /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
@@ -579,7 +579,7 @@
             return $encoded_value;
         }
 
-        return $this->_encode(strval($name)) . ':' . $encoded_value;
+        return $this->_encode((string) $name) . ':' . $encoded_value;
     }
 
    /**
@@ -918,7 +918,7 @@
 
         if (class_exists('pear')) {
             return PEAR::isError($data, $code);
-        } elseif (is_object($data) && (get_class($data) == 'services_json_error' ||
+        } elseif (is_object($data) && ($data instanceof services_json_error ||
                                  is_subclass_of($data, 'services_json_error'))) {
             return true;
         }