Does anyone know of a good tutorial for a worker/queued task application in PHP?

I am having issues with memory leakage when looping through several million records, I read that this is an issue with PHP. I could probably go ahead and make a it a worker/ queued task setup on my own, but I would like to see how others have gone about it to get some insight.

 

im having memory leakage when doing ajax. how did you design your page having the leak??