RE: [PHP] file syncronization

Look at the stat() command: http://www.php.net/manual/function.stat.php. The file size is a useful, but not foolproof, method of determining if the file has changed. Another option would be to generate an MD5 or similar hash for each of the files. If one is different than the other, you know something has changed, and you can use the stat() command to find out which changed last. --Bruce Bruce Christensen Intel Corporation brucex.r.christensen@intel.com -----Original Message----- From: Marc Ryan Ray [mailto:marcray@visto.com] Sent: Thursday, August 03, 2000 12:09 PM To: php-general@lists.php.net Subject: Re: [PHP] file syncronization I actually am looking for details on how to do it because we are using an nt/unix environment and want to write custom scripts. Marc Ray marcray@visto.com marc@holographic.com -----Original Message----- From: Soeren Staun-Pedersen staun@itcampus.dk Sent: Thu, 3 Aug 2000 20:26:17 +0200 (CEST) To: marcray@visto.com CC: php-general@lists.php.net Subject: Re: [PHP] file syncronization > I would like to know if anyone here knows how to syncronize > files. Basically i need to know how to tell if a file has > changed since i last downloaded it. What i want to do is > syncronize two directories on two servers over ftp and need > to only download what files have changed. Is there a way > to tell by date or certain file atrribute? Thanks for all > the help. Look at a program called 'rsync'.