PHP contains a number of libraries to work with popular databases.
1. Security on the system level. PHP can be configured so that it can provide maximum freedom of action and safety. PHP can run in safe mode (safe mode), which limits the use of PHP users. For example: the maximum execution time and memory usage.
2. Security on the level of the program. PHP includes strong encryption mechanisms. PHP is also compatible with many third-party applications developers, making it easy to integrate with secure e-commerce technology. PHP source code can not be viewed in the browser, because it runs on the server.
PHP runs on different web-servers (Apache, Netscape Enterprise Server, Microsoft IIS, Stronghold, Zeus) and platforms (UNIX, Solaris, FreeBSD, Windows 95/98/NT/2000/XP/2003).