PHP: Hypertext Preprocessor - Server-side HTML embedded scripting language. It provides web developers with a full suite of tools for building dynamic websites: native APIs to Apache and other web servers; easy access to MySQL, Sybase, Oracle, and other databases; IMAP; LDAP; HTTP headers and cookies.
Adds security hardening features to the language. Include news, libraries, Hardening patch, services advisories, a forum and a system for advanced protection of installations.