Hello Eddie, Sunday, January 3, 2010, 3:25:22 PM, you wrote:
> The primary difference between a variable and a constant is > mutability. If your database authorization details are not going to > change, make them constants. If your database details DO change > throughout the execution of a script, make them variables. In regards > to the performance of constants in PHP, that's an incredibly minor > improvement (a microoptimization, really) and it's my opinion that you > ought to be writing software to be good code and not have to hack > around considerations like how many microseconds your database > username declaration takes. > My advice: use constants for script immutable values and variables for > mutable values. If you want to have a class constant, do that, but > it's not worth the hassle to write a class around the idea that class > constants are faster than global constants. Use which tool is right > for the job. Depending on the structure of your application, > DatabaseClass::USERNAME might make more sense than DB_USERNAME, but > that decision ought to be dictated by the structure of your code, not > some small performance consideration. > -Eddie Gotcha, thanks for the guidance. I think I have a better understanding about it now. -- Best regards, Webmaster mailto:webmas...@vbplusme.com _______________________________________________ New York PHP Users Group Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk http://www.nyphp.org/Show-Participation
