Notes for C.1.15 Common Gateway Interface (CGI) - IB | RevisionDojo
C.1.15 Common Gateway Interface (CGI) Notes
Definition
Common Gateway Interface (CGI)
A standard protocol that allows web servers to interact with external programs, often written in languages like **Perl **or Python.
CGI enables dynamic content generation by executing scripts in response to user requests.
Note
CGI scripts are typically stored in a special directory, such as cgi-bin, on the web server.
How CGI Works
User Request: A user submits a form or requests a resource that requires dynamic processing.
Server Execution: The web server identifies the request as a CGI call and executes the corresponding script.
Script Processing: The CGI script processes input data, such as form fields, and generates output (e.g., HTML).
Response: The server sends the script's output back to the user's browser.
Analogy
Think of CGI as a translator that converts user input into actions performed by the server, then translates the results back into a web page.
Advantages and Disadvantages of CGI
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Definition
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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.
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Note
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Tip
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What is Common Gateway Interface (CGI)?
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Note
Introduction to Common Gateway Interface (CGI)
DefinitionCommon Gateway Interface (CGI)A standard protocol that allows web servers to interact with external programs, often written in languages like Perl or Python.
CGI enables dynamic content generation by executing scripts in response to user requests.
AnalogyThink of CGI as a translator that converts user input into actions performed by the server, then translates the results back into a web page.
ExampleA CGI script can generate a personalized greeting by processing a user's name input from a web form.
