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Implementation of server-side data, or any other logic necessary
Scripting to generate the response.
(a) User request: A user requests a (d) HTML generation: The script
page from their web browser by produces HTML (and possibly CSS
clicking a link, submitting a form, and JavaScript) as output.
FOR ONLINE READING ONLY
or entering a URL. Chapter Eight: Databases and Database Management Systems
(b) Server process: The web server (e) Response sent: The web server
receives the request and finds the sends this generated HTML back
appropriate server-side script to to the browser as the response to
handle it. the original request.
(c) Script execution: The script runs on (f) Browser rendering: The user’s
the server, performing actions such browser renders the HTML,
as querying a database, processing presenting the web page to the user.

2. Web server locates the page file
3. Web server asks the script engine to process
script and generate HTML

4. HTML stream passed back to the server

Web Server
5. Browser processes the
client side scripting

6. Browser processes
1. A client requests HTML HTML and displays
page by typing the web page
address or URL

Client
(User's Computer)

Figure 8.25: Server-side scripting
PHP’s role in web development stack
PHP is one of the most popular server-side scripting languages designed specifically
for web development. It fits into the server side of the web development stack,
interacting with databases, managing session data, and performing condition-
based operations to generate dynamic web content. PHP scripts can be embedded
directly within HTML documents, allowing for a seamless combination of static and
dynamic content.

503
Student’s Book Form Five

Computer Science Form 5.indd 503 23/07/2024 12:35