Information about Common Gateway Interface (CGI)
By: HTS Hosting
CGI is the abbreviation for Common Gateway Interface and is the protocol that enables the communication of a web server with scripts and other software. It can be understood as an intersection among web servers, which ensures standardized data exchange to take place between external applications and servers. It is among the oldest online interface technologies that exist and is still in regular use. CGI ensures that HTML pages do not need to be stored on a server, when CGI is used. In this scenario, HTML pages can be created dynamically every time a user makes a website query. CGI offers a simple solution for creating a server-side dynamic web page that is able to display different content every time that it is viewed.
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How CGI operates?
The mode of operation of CGI is explained here. Every time that a user makes an entry on a website, the relevant data doesn't get transferred directly to the server. It gets processed first, which is done by an external software, such as a CGI script. This processing doesn't happen through a web server. The data is transmitted by the program through a standardized CGI intersection. This ensures the production of the information in HTML. A special folder on a web server usually retains CGI programs. Various programming languages can be used to compose the CGI script. The CGI makes sure that the web server is able to communicate with the script, irrespective of the language that has been used.
Where can a CGI be used?
Certain applications that use a CGI are comments, forms, shopping basket, software tests and website statistics. In the case of a shopping basket, whenever a buyer adds a product to his online shopping basket, the relevant information is processed automatically by a CGI script, prior to sending it to the server.
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