Re: php unpack function

Addressed to: Chris Mattmann <chris@terra.jpl.nasa.gov> php-general@lists.php.net ** Reply to note from Chris Mattmann <chris@terra.jpl.nasa.gov> Wed, 23 May 2001 18:05:27 -0700 (PDT) > > Thanks for your help Rick. > > The problem I was having was basically as you understood, except for the fact > that I don't really have access to file at the time that I need to unpack the > data from it. > > The file is stored in terms of Oracle bFile pointers, so basically I have some > code that does like: > > //do query to get bfile pointer > ....... > > $bindata = $bfileptr->load(); > > > Now I have a string representation of the binary file. At this time is where > I having the difficulties. I need a way without the use of fseek(since I don't > have a file, I only have a string representation of it) to select a particular > subset of the data. > > Any advice you have would be greatly appreciated, and thanks for replying to > my original post. You should be able to use substr() to get any part of the returned $bindata you want. Just use the byte position equations from my last post to determine where in the data you want to return. I think your dba may be crazy to store that much data that way. Rick Widmer Internet Marketing Specialists http://www.developersdesk.com