使用GoogleAPI返回2个不同查询的搜索结果数。 （PHP）

I'm working on a small experiment for my Honours Project. What I'm trying to achieve is to compute the similarity between the amount of results returned, based on 2 Google search queries. When I have the 2 results, I wish to divide one by the other in order to return a 'ratio' of sorts.I'm working on a small experiment for my Honour