Re: variable_exists() patch

On Thu, 2003-08-14 at 14:01, Stefan Walk wrote: > On Thu, Aug 14, 2003 at 12:00:26PM -0700, walt boring wrote: > > It can happen quite easily. I always develop with full warnings/errors on. > > So do I. > > > So if for example a var isn't set for whatever reason, then trying to > > access the > > variable will throw a php Notice. variable_exists() would prevent that, > > as does isset(). > > Correct, isset works. > > > isset() would work for my example below, but it still is a 'broken' > > function in my opinion. > > > > if ($var) { // <-- you'll get a php notice on this line > > switch ($var) { > > ... > > } > > > > } > > > > versus doing > > > > if (variable_exists($var)) { //no php notices here > > switch($var) { > > ... > > } > > } > > As you already stated, isset works also. I asked for an occasion where > your variable_exists would be useful because isset does not work. > > DB arguments don't count, if a value is null in a database it is > considered - you guessed it - not set. > > I simply don't see a need for this. I have posted several examples, complete with code and output. -- Torben Wilson <torben@php.net> +1.604.709.0506 http://www.thebuttlesschaps.com http://www.inflatableeye.com http://www.hybrid17.com http://www.themainonmain.com -----==== Boycott Starbucks! http://www.haidabuckscafe.com ====-----