The Tribunal agreed with the Philippines position on almost every question with the exception of 2 features: Gaven Reef (North) and McKennan Reef. Both of those features were found to be high-tide elevations.
The Tribunal also ruled Chinese activity in the region was illegal, found China to be violating its obligations under UNCLOS and failing to protect the natural habitats (including willful destruction of the coral and endangered species). China's harassment of Philippine ships was also ruled illegal. The nine-dash line was ruled invalid. China's claims of "historic waters" was found to be groundless. Mischief Reef, Second Thomas Shoal, and Reed Bank were found to “form part of the exclusive economic zone and continental shelf of the Philippines.”
Really, this was about as complete a victory for the Philippines (and refutation of everything China claims and is doing) as possible.
Now the court has ruled all those claims void ("None of the fiercely disputed Spratly Islands, the UN body found, were “capable of generating extended maritime zones" in the article). However still large parts of the Spratleys lie in the Exclusive Economic Zone of the Philippines.
The whole thing about the Spratley islands began with Vietname and the Philippines occupying islands there: https://en.wikipedia.org/wiki/Spratly_Islands#Geographic_and...