Re: New Member: PHP 4 bug? Solved!

Thanks for the mails on this subject! First responses to the reactions, then the solution to the problem: I wrote: > > I developed a small program that works fine at the development server, but not at the > > production server. Specifically the statement: > > ereg_replace("\W", "_", $id); seems to be not processed at all > > (meaning: replace all non alphanumeric characters by an underscore). > > Other ereg_replace calls are processed correctly on both servers. Maxim wrote: > I had the same thing, when I tried to use Perl RegExpressions it often > didn't work in PHP(4) > Pls. Tell me if you'll find out the answers like what to use instead if it's > not allowed at all.. I found the reason. See below. You should be able to use preg functions instead of ereg functions (at least it works for me). Marc wrote: > Are you sure the Perl library has been compiled into PHP when building 4.0.1 > pl2? Also check if php.ini configurations are identical. Thanks. This seems to be the reason it doesn't work. I wrongly assumed that the Reg-exp library was compiled in, as a lot of regular expressions _did_ work. But obviously you need the Reg-exp library for the remaining regular expressions. Teodor wrote: > is ereg_replace() acting global by default? > try preg_replace ('/\W/g','_',$id). Good suggestion, thanks. It gives an message "Warning: Unknown modifier 'g' " and stops processing. I don't see why! preg_replace ("/\W/i","_",$id) did work though. After a lot of testing I found that the ereg_replace call doesn't accept generic character types on the production server, where it does accept them on the development server. The difference in functionality is explained by the following mail I found on the subject: ---- FROM: jnshah@fetchmail.com 05-Jul-2000 11:23 TO: info@selim-sonos.de When you compile PHP you can choose to use the bundled Reg-exp library which allows POSIX style expressions used by nawk and others, or point it to another library. More significantly, you can use the Perl style reg-exp (and why not!) by calling the PHP built-in functions preg_match() etc... Further information is available in the PHP manual.