PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. PHP-enabled web pages are treated just like regular HTML pages and you can create and edit them the same way you normally create regular HTML pages.
PHP can be used on all major platforms and has support for most available web servers and a wide range of databases. PHP also has support for talking to other services using protocols such as LDAP, IMAP, SNMP, NNTP and POP3.