Why variables do not persist between requests in PHP - Quick Recap

Recall & Review

beginner

Why do variables in PHP not keep their values between different web requests?

Because each web request starts a new PHP process, variables are created fresh and lost when the script ends. PHP does not remember variable values automatically between requests.

beginner

What happens to PHP variables after a web page finishes loading?

All PHP variables are destroyed when the script finishes running. The server forgets their values because PHP runs scripts from scratch on every request.

intermediate

How can you keep data between PHP requests if variables do not persist?

You can use sessions, cookies, databases, or files to save data between requests. These methods store data outside the script so it can be reused later.

intermediate

What is a session in PHP and how does it help with variable persistence?

A session stores data on the server linked to a user. It lets you save information like login status or preferences across multiple requests.

intermediate

Explain why PHP is called a 'stateless' language in the context of web requests.

PHP is stateless because it does not remember anything from one request to the next. Each request is independent, so variables do not persist unless you use special storage methods.

Why do PHP variables lose their values after a web request ends?

A Because variables are saved automatically

B Because PHP scripts start fresh on each request

C Because the browser deletes them

D Because the server crashes

PHP runs a new script for every request, so variables are reset each time.

Which method can you use to keep user data between PHP requests?

A Sessions

B Local variables

C Temporary variables

D Function parameters

Sessions store data on the server to keep it between requests.

What does it mean that PHP is 'stateless'?

A It runs only once

B It saves all variables automatically

C It stores data in the browser

D It does not remember data between requests

Stateless means no memory of previous requests unless you use storage like sessions.

When does PHP destroy all variables?

A At the end of each script execution

B When the user closes the browser

C After 1 hour

D When the server restarts

Variables exist only during the script run and are destroyed after it finishes.

Which of these is NOT a way to keep data between PHP requests?

A Using cookies

B Using sessions

C Using local variables

D Saving to a database

Local variables only exist during one script run and do not persist.

Explain in your own words why PHP variables do not keep their values between web requests.

Think about what happens each time you reload a web page.

Describe at least two ways to save data between PHP requests and why they are needed.

How can PHP remember information about a user across pages?