The final type of variable that we will discuss in this chapter is the cookie variable. These variables reflect the HTTP cookies passed from the browser to the server along with the request for a template. These HTTP cookies have nothing to do with their edible namesakes. Rather they are information stored by the server in a client…

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If you have done any amount of Web browsing, you have probably encountered long URLs with long strings of parameters following a question mark in the following form: These URLs are built out of a basic URL (http://server /path/document) and a series of parameters of the form paramet er=va’l ue. Each parameter is separated from the next by…

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CGI variables are created every time a template is requested and returned to a browser. These are a fallback to CGI-BIN programming, which was the first mechanism for server-side scripting and automation on the World Wide Web Most Web servers including those supported by ColdFusion provide support for CGI-BIN scripts. In the world of CGI-BIN programming Web servers…

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Cold Fusion is different from many programming environments in that it has many types of variables. These types differ from each other in terms of their sources and how they are created. There are also differences in how the variables are referenced Nonetheless all of these types of variables are fundamentally used in the same way: They can be…

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Variables are the c:Ce of any programming environment. Without variables it is impossible to abstractly refer to values by name and it is impossible to develop logical processes that achieve specific goals. Without variables the value of programming of any sort whether it is ColdFusion style Web scripting or full-scale development of operating systems, is greatly diluted. In…

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