Hi,
I speak full english and i am located in the UK, i have over five years experience in PHP, mySQL, HTML, css, jQuery and many more programming languages. I am polite and when asked questions i will answer promptly.
I have had a look at the php file you have provided and will be able to add the google adsense code in between the posts and allow you to manually adjust the position yourself. I will define the position at the top of the file and then all you have to do is change the number for what post position you want adsense at.
I think you should choose me to do your project as i will be able to start immediately and provide a 5 star job! You will also be able to contact via skype if you have any problems or questions and i will happily answer them. I will also happily explain each step of the project to you, so you understand what i am doing. You should also choose me as i am English speaking from birth, unlike a lot of freelancers on here and sometimes they do not understand what you are asking of them and will only do a half job of it, where as i will give you my 100%.
Thank you for reading my proposal, if you have any questions please feel free to ask.
Cheers,
Craig