Client-Server model is a form of 2 Tier architecture in PHP. With use of database it becomes a 3 Tier architecture
In 3 tier architecture, client directly interacts with intermediate server and intermediate server will directly interact with database server.
A tier-1 ISP connets to all other tier-1 ISP's; a tier-2 ISP connects to only a few of the tier-1 ISPs. Also a tier-2 ISP is a customer of one or more tier-1.
Primarily it is applied for creating web applications and websites which deal with client-server model. Use mysql db with php and you could build a three tire architecture. Couple of big website like Facebook do use php.
Client tier is actually a 3 tier hierarchical structure which includes cliet tier, application tier and data tier.
PHP Consultant is a Expert PHP Developer who Guide PHP Development Process
PHP is a scripting language and does not follow a 3-tier architecture. However, there are several popular frameworks which follow the MVC architecture:Zend FrameworkCakeSymfonyCodeIgniter
xzvcnb, maznvl xl nlnlnl nlnl,nlsvd asfda asdfnalsaqf fasfn fadfgag
In 3 tier architecture, client directly interacts with intermediate server and intermediate server will directly interact with database server.
In 3 tier architecture, client directly interacts with intermediate server and intermediate server will directly interact with database server.
the client is on the first tier. The database server and web application server reside on the same server machine, which is the second tier. This second tier serves the data and executes the business logic for the web application
At first glance, the three tiers may seem similar to the model-view-controller (MVC) concept; however, topologically they are different. A fundamental rule in a three tier architecture is the client tier never communicates directly with the data tier; in a three-tier model all communication must pass through the middle tier. Conceptually the three-tier architecture is linear. However, the MVC architecture is triangular: the view sends updates to the controller, the controller updates the model, and the view gets updated directly from the model.
In single tier architecture, a single executable file handles all functions related to user,business and data services.like the case of PASCAL,COBOL.
Single-tier architecture is the notion of having the user interface of a web application, the middle ware and the data access all contained in one whole architecture. Usually in Software Engineer you break your application to make them more maintainable and sustainable. If you know that your software will not grow over time, you may want to do a single tier architecture.
3-tier architecture
Client, Middleware, Server
N-tier software architecture refers to a method of designing a system. In this system, the presentation, application processing, and data management are logically done separately from each other.
real-time 3-tier architecture .