i need a program in php?

[hireshire]

I've a website but I do not know how to ask visitors for their information. My web host provides php and MySQL. I need a program which can ask visitors on my website to give their personal information. The personal informations i need from visitors are their name, address and phone number. I can make a html form but the difficulty is with the processing part that needs to be done after the submit button is pressed by the visitor. I want the information given by the visitor to be stored anywhere from where I can read it. I know to use 'mailto:' in html but this doesn't work on all platform. Can someone give me the program i'm looking for?