Hi @timob , As @Aaron said, there is no native PHP API interface to Solace. There are couple of wrapper ideas… Here is one based on our C API (CCSMP):
Though I haven’t implemented message selectors, since its based on C API, it should be possible to extend it to support it.
Here is another option with MQTT for completeness. This however won’t be an option for you since MQTT has no concept message selectors - to my knowledge.