Re: while loops [ newbie ]

<charles@lunarmedia.net> 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/