PHP supports five class property scopes: public, private, protected, final and static

To create a new object in PHP we can use the new statement to instantiate a class.

Class constants are created like: const NAME = ‘VALUE’;

“->” is a dynamic class method invocation in PHP

PHP supports six method scopes: public, private, final, static, protected and abstract. But it does not support friendly

When we declare a method is as final then it is not possible to override that method. Methods should not be overridden due to some security or any other reasons

Returns the version of the Common Gateway Interface (CGI) the server is using

Normally implemented over a ....

Examples: IIS web server, cloud services, …..

Remove a session variable

Composer is dependency management tool for PHP, like a library full of books
Per project tool (vendor folder), not per system

f PHP_SELF is used in your page then a user can enter a slash (/) and then some Cross Site Scripting (XSS) commands to execute.

Composer is dependency management tool for PHP, like a library full of books
Per project tool (vendor folder), not per system

Install by using the command:

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The feof()

Returns the name of the host server (such as www.w3schools.com)

Data layer Manages the data of the system

Application layer is the application functionality and the system logic

Presentation layer is the visualizing information and UI of the application