sorry I mixed 'set' with 'given' and if my mistake did prevent all the smarter guys to give u an answer I'm sorry too.
I hope not to be too limited to give u an answer well, think about how PHP >5 works. $a e.g. is a REFENCE to some memory where the variable resides. so the interpreter running into this unset() statement searches the reference table to find the pointer named $a to delete its name from the reference table. it doesn't find it, but it's ment to unset it anyway, why should be complained about it. in the next line the $a is not set, as u want it. mmmh nice as well that nobody told me direcly that I mixed set with given ralph_def...@yahoo.de ps.: great behavior, I think for less then 10% of the world population is english the native language, such a behavior prevents very good and smart programmers arround the world to share their knowledge. "Tom Worster" <f...@thefsb.org> wrote in message news:c6b93df9.114fa%...@thefsb.org... > On 8/25/09 5:00 AM, "Ralph Deffke" <ralph_def...@yahoo.de> wrote: > > > of course its a syntax error, because unset() IS NOT A FUNCTION its a > > language construct > > that's hard to believe. i can't imagine how the compiler could reliably > predict if the argument will be set or not when the unset line is executed. > > > > "Stuart" <stut...@gmail.com> wrote in message > > news:a5f019de0908250201g14e4b61cn73c6cd67da6f...@mail.gmail.com... > >> 2009/8/25 Ralph Deffke <ralph_def...@yahoo.de>: > >>> causes an error > >>> Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `'$'' > > in > >>> C:\wamp\www\TinyCreator\testCrapp6.php on line 42 > >> > >> This is a syntax error, not a runtime error. You've clearly done > >> something wrong. > >> > >>> "Tom Worster" <f...@thefsb.org> wrote in message > >>> news:c6b87877.11463%...@thefsb.org... > >>>> is it the case that unset() does not trigger an error or throw an > >>> exception > >>>> if it's argument was never set? > >> > >> Absolutely. > >> > >> -Stuart > >> > >> -- > >> http://stut.net/ > > > > > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
