LAMP is acronym for Linux , Apache , MySql , PHP/Perl/Python(CGI)..Its a solution stack of opensource programmes and its a platform Wherein each component plays a specific and important role..
When user requests for a page like :-
http://localhost/index.php
The request is received by the Operating System I.e Linux and then the request is handed over to apache..
Apache handling the request check if the url requested is a PHP or a CGI page.. If yes it hands over the request to the PHP interpreter.. Now it replies with the requested resource eg :- index.html etc..
The PHP interpreter parses the requested file , executes the PHP Code .. If the code includes database queries the request is handed over to MySQL … Mysql deals with the requests received and executes them...
Once the script interpreter has completed executing the program it returns the result to the browser..
The figure below will give a better understanding :-
Thats all for this article...Stay tuned for more..
Components
- Linux - Linux Provides the basic Operating System and Environments
- Apache - Apache replies to HTTP Requests or passes them to PHP interpretter..
- MySQL - It serves as a data storage functionality
- PHP - PHP interpreter parses PHP Code and executes..
How it works
When user requests for a page like :-
http://localhost/index.php
The request is received by the Operating System I.e Linux and then the request is handed over to apache..
Apache handling the request check if the url requested is a PHP or a CGI page.. If yes it hands over the request to the PHP interpreter.. Now it replies with the requested resource eg :- index.html etc..
The PHP interpreter parses the requested file , executes the PHP Code .. If the code includes database queries the request is handed over to MySQL … Mysql deals with the requests received and executes them...
Once the script interpreter has completed executing the program it returns the result to the browser..
The figure below will give a better understanding :-
Code:
_______________
/ Client /
/ Web-Browser /
/______________/
||
Initiates || http://go4expert.com/index.php
request ||
__________ ___________ ________
/ / Hands over to apache / / ------------->/ /
/ Linux / =======================> / Apache / PHP Parsing / PHP /
/_________/ <------------------------/__________/ <-------------/_______/
HTTP RESPONSE ||
||SQL QUERY
_________
/ /
/ MySql /
/________/
