PHP Built-In Functionality (was: writing / reading from tex t files)

Torben, Just a side note: I am continually amazed by the functionality that you and the rest of the PHP development team put into PHP. You have functions in PHP that would take a dozen lines for me to code in PERL and/or C. Quite often, when I think I've got to code some capability, I discover you have a function already. from those of us who have been pushing bits for a long time (30 years for me), thanks... rick -----Original Message----- From: Lars Torben Wilson [mailto:torben@php.net] Sent: Friday, February 15, 2002 12:53 PM To: cyberskydive Cc: php-general@lists.php.net Subject: Re: [PHP] writing / reading from text files On Fri, 2002-02-15 at 10:36, cyberskydive wrote: > thanks guys, > > there is just one more question I dont see an answer for anywhere I've > looked. > > will fseek read past \n's and if so how do I move the filepointer to a > newline, or should I just put all the data on one line? (not unreasonable n > this case) fseek() neither knows nor cares what the contents of the byte it's pointing to are--it's not even an error to seek beyond the ends of a file, so watch your bounds checking. :) fread() will read a line at a time, and update the file pointer as it goes, and is the usual way of reading a file line-by-line. A lot of file work in PHP is done with the file() function, which reads a file all at once, placing each line into its own array element. This makes line processing very, very easy--dunno if that will help you in this situation, though. Torben > "Rick Emery" <remery@excel.com> wrote in message > > news:EAA093B474ABD311A71E00508B5FE08305C2D1C3@adntex03.us.excel.com... > > from the manual: > > > > int fseek (int fp, int offset [, int whence]) > > Sets the file position indicator for the file referenced by fp.The new > > position, measured in bytes from the beginning of the file, is obtained by > > adding offset to the position specified by whence, whose values are > defined > > as follows: > > SEEK_SET - Set position equal to offset bytes. > > SEEK_CUR - Set position to current location plus offset. > > SEEK_END - Set position to end-of-file plus offset. > > > > -----Original Message----- > > From: cyberskydive [mailto:cyberskydive@sunraydesigns.com] > > Sent: Friday, February 15, 2002 10:43 AM > > To: php-general@lists.php.net > > Subject: Re: [PHP] writing / reading from text files > > > > > > lol- so I use fseek() to move the file pointer before where I need to > > write/replace/update a value? Is there a parameter for fseek to tell it to > > move to a newline, or stop after a certain bytes? > > "Rick Emery" <remery@excel.com> wrote in message > > > > news:EAA093B474ABD311A71E00508B5FE08305C2D1C2@adntex03.us.excel.com... > > > fopen(), fwrite(),fseek(),fread(),fclose() > > > > > > -----Original Message----- > > > From: cyberskydive [mailto:cyberskydive@sunraydesigns.com] > > > Sent: Friday, February 15, 2002 10:29 AM > > > To: php-general@lists.php.net > > > Subject: [PHP] writing / reading from text files > > > > > > > > > I need to write to a specific line in a text file, read from a line on > > > demand, and update values at random, I want to do this all in the same > > text > > > file. > > > > > > what is the best way to go about this? > > > > > > > > > > > > -- > > > 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 > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- Torben Wilson <torben@php.net> http://www.thebuttlesschaps.com http://www.hybrid17.com http://www.inflatableeye.com +1.604.709.0506 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php