Description
Description
The following code:
$headers = $msg->headers;Resulted in this output:
Typed property RdKafka\Message::$headers must not be accessed before initialization
But I expected this output instead:
[] or null
As the library switched to typed properties, it is critical that all of them are properly initialized either with null (if nullable) or with some default value. In this case https://github.com/arnaud-lb/php-rdkafka/blob/6.x/message_arginfo.h#L72 here you have not defined a default value for $msg->headers and because it is not initialized on construction, first access of this public property causes this error.
Suggestion: As this property is defined as an array, let it be initialized as an empty array by default or define this prop as nullable if no header information is present. (stub: https://github.com/arnaud-lb/php-rdkafka/blob/6.x/message.stub.php#L29)
Same for the public properties $err, $partition and $offset.
php-rdkafka Version
5.0.2 and 6.0.0
librdkafka Version
No response
PHP Version
PHP 8.0
Operating System
Debian
Kafka Version
No response