In recent years, downsizing to a mini computer personal computer from a large general-purpose computer has been advanced. Along with it, the computer language also depending on the machine, Fortran language, we have evolved from COBOL language to an object-oriented language. This document is the introduction of object-oriented language PHP that runs on the server of Web sites that are available in the current computer society. From those only see also Web site, there are bulletin board, form, online shopping users and Web site operators interactive Web site which communication can take of like. PHP is a language that can create an application program to take the mutual communication of the user and the Web site operators of the latter.