LLPhant is one of the most popular AI framework in PHP
However, it doesn't support MongoDB as a vector store for embeddings out of the box.
Expected: As MongoDB as a supported Vector Store - https://github.com/LLPhant/LLPhant/tree/main/src/Embeddings/VectorStores
https://github.com/LLPhant/LLPhant/tree/main?tab=readme-ov-file#vectorstores