CGI, or Common Gateway Interface, is a term that often leaves many puzzled. This article aims to demystify CGI, explaining its purpose, how it works, and its common uses. CGI is a standard that allows data to be exchanged between a server (the hardware and software that hosts your website) and a web client (your browser). It involves a series of commands or scripts that send data back to the web server for processing.
CGI is typically used in conjunction with standard HTML tags to collect data from a user, which is then passed to a CGI routine for processing. Some of the most common applications of CGI include:
A CGI routine can be written in any language that understands the CGI standard. One popular CGI language is PERL, a scripting language that is relatively easy to understand and use. Unlike compiled languages like C++ or Visual Basic, which can be directly executed, a PERL routine must be interpreted by the web server each time it is run.
Here's a simplified explanation of how CGI works:
This introduction to CGI should help clear up some of the mystery surrounding this important web technology.
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