For a project I am considering building a Boggle type game in PHP. All of the solutions I have seen online have used some sort of tree or hash based approach.
Are there any similar data structures built into PHP? Any advice on how to handle figuring out what words are present on a current board of letters?
PHP does have hash data structures built into the language. They are generally called associative arrays, though.
This website has a very brief explanation of them.