PHP developed by Rasmus Lerdorf in 1995.
PHP is an open source.
PHP is server-side technology, which means it doesn't run
on the client, which is what a Web browser is.
PHP designed for Web site development.
PHP's default file extension is .php.
What is Server-side scripting? :
Server-side scripting is about connecting Web sites to back-End
servers, such as databases. Types of two-way communication :
- Server to client: Web pages can be assemble from back
end-server output.
- Client to server: When customer enters information can be
acted upon.
Server-side scripting consist of two main parts:
- Scripting language
- Scripting engine (which may or not be built into the Web
server).
- The engine parses and interprets pages written in the
language.
Advantages:
Speed :It is embedded in HTML code on websites , the
time to process and load a Web page .
Stability :Stable means two different things - First
the server doesn't need to be rebooted or restarted often. and
software doesn't change radically and incompatibly from release to
release.
Ease to use : PHP code is designed to be included
easily in an HTML file for use in websites.
Open Source : It is free,generally source code
available for use or modify .
Cross-functionality Ability : PHP is compatible with
the such web servers: Apache HTTP Server for Linux/Unix and Windows
and Microsoft Internet Information Server. It also works with
several lesser-known servers.
Whitespace Insensitive :PHP's whitespace
insensitivity does not mean that spaces and such never matter.
