Are you publishing a event?

See https://github.com/nostrver-se/nostr-php/blob/main/src/EventInterface.php#L116 which should set all the tags on a event. And there is also the getTags() method there. 

 Ah, you're right. The helper is publishing all of the data, but Nostrudel only displays the first one. That sucks.

https://next.nostrudel.ninja/#/articles/naddr1qvzqqqr4gupzq6f5kx6jwzcshu4w5d6z2dpeut7lu24c89e7avhlxnwptdmwsjq3qqvkxct5dphkc6tr945x7atjwvknzdej8qurwde58y6qrhxef7 

 Use the JSON view to see them all in noStrudel 

 Yeah, I that's where I checked, but you can see that he only pulls one of them. 

 Opening the tags section only shows one tag indeed. A bug? /cc @hzrd149