IDE combines the editor, compiler and other useful tools in the same software package. Its advantage is that when a program with syntax errors is compiled, the programmer sees the error messages and the original program at the same time -- this makes debugging much easier. Also, some IDEs contain debuggers. Visual J++, VisualAge for C++ or Java, Java WorkShop, and Visual Caf�?�© are IDEs.
From :www.course.com/careers/glossary/programming.cfm
PHP: Hypertext Preprocessor is an open source server side programming language extensively used for web scripts and to process data passed via the Common Gateway Interface from HTML forms etc. PHP can be written as scripts that reside on the server and may produce HTML output that downloads to the web browser. Alternatively, PHP can be embedded within HTML pages that are then saved with a .php file extension.
From : www.smallbizonline.co.uk/glossary_of_internet_terms.php