How PHP Works ??

Lets see how PHP works

• Apache is a web server  application, ie it can host webpages .
• When a user enters an Url in Browser , the browser send a request to the apache server with that file name. 
• Apache identifies the requested  Page or file in the File System of Server. (where the file resides)
• If its a PHP page it use PHP engine interpret the php file and generates an output
  (Sometime The PHP file will read some entries from the database server or will send a mail using the mail server)
• The output is HTML form and Apache send it back to Web Browser
• The webbrowser will show the HTML Code is browser in a Formatted way
  (Check the View Source Code option in Browser to see the HTML Code)