title: PHP implementation of graph algorithms
body: <p>I'm not PHP programmer, but I need to make one script and I'd like to have some prepared DFS algorithm in PHP. I think that all programming languages should have at least some library for working with graphs, so I'm not forced to implement it on my own.</p>
  
  <p>Could some experienced PHP programmer tell me, where can I find some free library which will allow me to execute DFS?</p>