Google APIs / PHP script

Hello, We are looking for someone confortable with the Google APIs to developp a little script that will use the Google APIs (or other method) to generate suggested keywords and retreive datas for each suggested keyword. Starting with a 4 or 5 basic keywords list the script will have to : - Generate an exhaustive list of suggested keywords (based on Google keywords tool) - For each new keyword generated retrieve the following datas : ------- Global monthly searches ------- Estimated Adwords daily cost average ------- Number of results in Google for a request on the keyword The script has to be developped in PHP and Output file will be in CSV.