Validating user input should be a fundamental requirement, at both the front end and the back end. Failure to do so can result in something more than an embarrassment, and relying on any development framework to do the cleanup is wishful thinking. Here are some code snippets that will eliminate inadvertently erroneous or deliberately malicious user input, as well as sloppy coding deep within the framework de jour.

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This is America and the customer is King! Most companies work hard to make sure the Kings always come back. Except software companies, who often treat their customers as benighted captives.

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The WWW is still a Wild West show, with an ever increasing number of moving parts. With virtually non existent barriers to entry and proliferating architectures, languages and tools, the field is littered with surprises for the unwary and deadly embraces for even experienced practitioners.
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There are a lot of software frameworks out there, most available for ‘free’ as in a Siren’s Song. The laws of thermodynamics are still in effect, making most of these worth something less than their original price. (more…)