Development cost and maintenance cost is low
More reliable and great performance
PHP is open source and freely available.
Easy to embed into HTML code
PHP is platform independent. It can run on Windows, Linux and Unix
PHP supports a many databases like; MySQL, Oracle, Sybase, Solid, Informix, PostgreSQL and Generic ODBC
PHP is very simplified in nature, even HTML Coders can integrate the PHP MySQL programming
PHP is extensible
Apache and IIS Compatible
Coding is very easy to learn
PHP language syntax is similar to those of C and C++ languages.
Any changes to the site during or after the development can be done easily.
The framework and the internal structure of the design is very good.