[PHP] while loops [ newbie ]
be forewarned that a bash fan is writing this message with little to no perl/c++ experience. i have a file $file that is full of usernames and descriptions, one per line. i have another variable $username that i would like to compare against each line in the file and remove the line that matches the username field identically. $filename charles routers craig systems tonyportmasters i would think that a while loop could do this and possibly write the output, minus the line i want to take away to a temp file and then copy it over. in bash i would use a statement like: while read i; do < blah > done < $filename > $filename.tmp however i am not certain how to read in the contents of a file for comparison within a while loop. this is just going to be an uphill thread since my next question will be for the < blah > portion :) thanks in advance -charles -- ** There are two major products to come out of Berkeley: LSD and UNIX. We don't believe this to be a coincidence. ** -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] while loops [ newbie ]
On Thursday 17 May 2001 13:58, [EMAIL PROTECTED] wrote: > i would think that a while loop could do this and possibly write the > output, minus the line i want to take away to a temp file and then copy > it over. in bash i would use a statement like: > > while read i; do > < blah > > done < $filename > $filename.tmp > > however i am not certain how to read in the contents of a file for > comparison within a while loop. this is just going to be an uphill > thread since my next question will be for the < blah > portion :) http://php.net/file http://php.net/foreach http://php.net/fopen http://php.net/fwrite Should get you started. -- Christian Reiniger LGDC Webmaster (http://sunsite.dk/lgdc/) ...1000100011010101101010110100111010113... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] while loops [ newbie ]
<[EMAIL PROTECTED]> wrote: > i have a file $file that is full of usernames and descriptions, one per > line. i have another variable $username that i would like to compare against > each line in the file and remove the line that matches the > username field identically. > > $filename > > charles routers > craig systems > tony portmasters > > i would think that a while loop could do this and possibly write the > output, minus the line i want to take away to a temp file and then copy it > over. in bash i would use a statement like: > > while read i; do > < blah > > done < $filename > $filename.tmp > > however i am not certain how to read in the contents of a file for > comparison within a while loop. this is just going to be an uphill thread > since my next question will be for the < blah > portion :) Use fopen() to open the file, while ( ! feof( $fp ) ) to loop through the file until the end of it is reached and fgets() to read one line at a time. Use explode() to grab the first word on each line, compare it to your other variable and write each line to a new variable if it doesn't match. Then use fwrite to write to a temporary file and copy that file over the original. -- Steve Werby President, Befriend Internet Services LLC http://www.befriend.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
