Hi,
I've worked in a similar task before. I can extract and display the data from yahoo finance without need access to api, just scraping the data from the html in e.g. [login to view URL]
I can give you a HTML file with the code to display the data, and a separate PHP script to scrape the data. It'll be easy to copy & paste inside other html file. I can start immediately.
Please let me know any comment/doubt.
Regards,
David.