RE: [PHP] reading/writing flatfiles with simultaneous users?

If its the same file, you'll be subject to file locking on the file. Eg If you open for read/write in the first script, the file will not be able to be opened for write in the second script (within the fileopen/close timeframe) So in answer to your question, php will only let one instance of a script open and read a flatfile in that scenario. With a database and record locking (ie using postgress), you can avoid this as you probably know. Alternatively you could have a failover which would try to open the file within a specified time, and exit gracefully if it couldn't. flat files are ok for low volume scripts - ie a few requests every now and then, but kind of flail a little when attacked with multiple requests a second. YMMV! Loz. -----Original Message----- From: Craig Simons [mailto:csimons@cdwebstudios.com] Sent: September 26, 2000 02:18 PM To: php-general@lists.php.net Subject: [PHP] reading/writing flatfiles with simultaneous users? I have a script that takes in variables from the user (user name, ipaddress, refering page, etc) and writes them to a file. This file is later read by another script to produce various stats. My question is, does php only let one instance of a script execution open and read a flatfile at a time? Obviously a flatfile has severe design limitations compared to a database, but can it be kept accurate enough with proper programming methods? - Craiger -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net For additional commands, e-mail: php-general-help@lists.php.net To contact the list administrators, e-mail: php-list-admin@lists.php.net