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it seems that people stopped developing CF Custom tags in about 2004.
I've been developing in CF for 10 years now, with no plans to quit.
There's definitely a larger base of ASP & PHP developers. And I can't recall recently hearing of a PHP or ASP site converting to CF, whereas I have heard of migrations in the other direction.
ASP has a ridiculously complicated code structure, is difficult to learn, is inefficient on the server. Unfortunately, lots of people use it anyway. I always run into problems when I (try to) use ASP.
PHP, (the best choice) is easy to learn, has a simple code structure, and is very efficient on the server. PHP has never done me wrong. It is open source so improvements are being made by all the DEVELOPERS - not by a few people at Microsoft.
But please stop arguing about PHP versus ASP on a ColdFusion forum.