OK I found this out last week... if its not a coding error... its this.. There is a bug with IE7, I have some billing scripts for a large Sydney ISP and I was working on a script on my laptop which I recently updated to IE7... after tipping my hair out for a few hours cause I was certain it was not a coding error I decided the run the script from my PC which was still IE6 and would u believe it, the script only run once I did some searching on (good old faithful) google and did discover a few bugs with IE7... whats this have to do with PHP u ask... one was a session bug.. and with my double script running bug which I could not find any information on... I decided to lock the site to IE7 with javascript and told the ISP to roll back or stay locked out.... A lot of money @ stake... damn u Micro$oft... CK > -----Original Message----- > From: Stut [mailto:stuttle@xxxxxxxxx] > Sent: Tuesday, 23 May 2006 10:06 PM > To: Lester Caine > Cc: PHP List > Subject: Re: Can a script run twice? > > Lester Caine wrote: > > > I'm having very occasional problems with my PHP5 applications which > > only seem to be explained if the script is run twice. > > > > Example - page has 'Add Ticket' button, which adds a record and marks > > it as being processed by the location that created it. 99.99% of the > > time no problems, but just now and again there are two records, with > > different primary keys - so the database bit worked - but with very > > close now times and identified as being at the same counter. The next > > page does not have the 'Add Ticket' button, so it would seem the first > > script was trigger twice? > > > > Am I simply going mad ( which is the logical choice ;) ), or is this > > something that can happen and needs to be handled? > > This can happen if a page contains a reference to an empty URL. For > example, <img src="" /> would cause the page to be loaded twice in some > browsers. That'd be the first thing I'd check. > > Is the 'Add Ticket' button a GET or POST request? If it's a POST then > chances are the script itself has a logic error since the user would get > asked if they wanted to repost the data. If it's a get then you've > violated one of the cardinal rules of web-based application development > - GETs get, POSTs do. > > -Stut > > -- > 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
