As Alberto says, PHP has to be used to do such thing ONLY when Java is not acceptable. There are many JavaScript snippets out there that do such things. Most of them are called *DOUBLE COMBO* but as I recently found out in this list, and from a similar question I had, is NOT so simple for PHP to figure out what was chosen in the second choice. Try to read post made the last month and you'll get the answer to all this.
C. > -----Original Message----- > From: Alberto Serra [mailto:[EMAIL PROTECTED]] > Sent: Sunday, July 07, 2002 2:44 AM > Cc: [EMAIL PROTECTED] > Subject: Re: [PHP] Linked drop down selection lists and dynamically > generated links > > 妤把我志快找! > > Peter Goggin wrote: > > Can this be done using only PHP or do I need to use Javascripts? > > managing this in PHP should be considered *only* when jscript is not > available. It's a matter of load distribution. > > When doing client server applications (like the web is) you shall always > remember that any interaction about the two entities adds up time to the > result. Which, incidentally, is the point in using Stored Procedures > (when they are properly coded and the db engine is capable of supporting > them) instead of making tons of single SQL calls from a single PHP script. > > Now, if all of your data is already on the client (somehow stoked in > jscript variables) your user interaction will be quick and easy. If you > call PHP any time you will get a serious delay (because you do issue a > request along the net, then the server processes it and sends it back to > your browser, that again processes it and shows it). So this should be > considered an emergency solution only. > > A 100% robust solution should contain both, and call PHP only if jscript > is not available on the client. But this is costly and requires the two > procedures to be realigned everytime you have some change going on. Most > applications can just use javascript and forget about it. > > 扭抉抗忘 > 均抖抆忌快把找抉 > 妞我快志 > > > -- > > > @-_=}{=_-@-_=}{=_-@-_=}{=_-@-_=}{=_-@-_=}{=_-@-_=}{=_-@-_=}{=_-@ > > LoRd, CaN yOu HeAr Me, LiKe I'm HeArInG yOu? > lOrD i'M sHiNiNg... > YoU kNoW I AlMoSt LoSt My MiNd, BuT nOw I'm HoMe AnD fReE > tHe TeSt, YeS iT iS > ThE tEsT, yEs It Is > tHe TeSt, YeS iT iS > ThE tEsT, yEs It Is....... > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
