Re: Help with regular expressions

Daniel, > Hi! I´m new to regular expressions, and it seems to be an art to make it > work as expected. > > I´m trying to remove all "single-line" comments from an string - that´s > everything after "//" to the end of a line. I expected that this would do > the job: ereg_replace("//[[:alnum:]]*\n","",$string), but it didn´t work. > > Any tips? RegEx can be expensive. Always ask "do I need one?" In this case, use a string find to locate the // and the following \n (or whatever marks the end of line on your/supported OpSys), then substring or string replace. If would be quite interesting to see a performance comparison on this - if you've got time... =dn PS if you were working with alpha-text and had to consider upper and lower case, then things might sound very different!