Relations, relations everywhere. They can be difficult and maybe slow to represent in SQL. So why not to use a graph? Neo4j is a highly scalable and robust graph database, which fits your complex relation needs. In this talk, I will give an introduction into the graph concept, Neo4j, the Cypher Query Language and an integration in PHP. There are already some good PHP libraries for graph processing. I'll also show some examples and benchmarks using my favourite lib that is based on the Doctrine Common API.