In PHP, Use require() when the file is required by the application. Use include() when the file is not required and application should resume
Angular provides two ways to work with forms: template-driven forms and reactive forms (also known as model-driven forms).
A function is a block of statements that can be used repeatedly in a program, A function will not execute immediately when a page loads.
In Angular, Reactive forms are forms where we define the structure of the form in the component class. very important