Re: should i be concerned about these "Use of undefined constant xxxx - assumed 'xxx'..." notice warnings???

On Tue, 2003-04-29 at 06:00, Leo G. Divingracia III wrote: > i'm getting these "notices": > > Use of undefined constant csuh_tag - assumed 'csuh_tag' in > c:\foxserv\www\inventory\test3.php on line 20 > > they work and all, but i want to run clean and true PHP code. should i > worry? or just let it go? the stuff works... Your intentions are good, and pure code should never output warnings or errors. This specific warning is probably caused by the very common mistake of doing like this: define(csuh_tag, 20); print csuh_tag; The problem is that in the first line, you are using an undefined constant - namely csuh_tag. It is not defined, and it is not technically a string. The correct way to write it is like this: define('csuh_tag', 20); print csuh_tag; This code will not generate any warnings. This mistake is a very common cause for programming errors (especially with people who are not so familiar with programming) so the PHP developers decided do implement a "hack" which means that a constant that has not been defined will have the value of the name... to make the code work as the user expected. Personally, I believe this is a very bad feature and it would have been much better to spit out a compile error so that it would be obvious that the construct is invalid. But then again, I am a bit more strict in my thinking than most of the PHP developers... Hope this helps. -- Best regards, Per Lundberg / Capio ApS Phone: +46-18-4186040 Fax: +46-18-4186049 Web: http://www.nobolt.com

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