inkbx

the tracer default span's id may equal it parent id

2

in tracer.php ```php $span = new Span( TracerInfo::getTraceSpanId(), $this->name, new AnnotationBlock( $this->endpoint, $this->startTimestamp, zipkin_timestamp(), AnnotationBlock::SERVER ) ); ``` in span.php ```php $this->setIdentifier('parentId', $parentId, [TracerInfo::class, 'getTraceSpanId']); ``` when tracer type is...