Re: while loop

Zeus wrote: > > Isn't the '=' operator suppose to be used for assigning and not for > evaluation. > yup. > I thought '==' should be used in this context? nope. Thing is, you ARE assigning. Here's a breakdown of the controlling part of the loop in english: --->while ($row = mysql_fetch_array($query)) { this can be thought of as this: 1. fetch an array from $query, which is a mysql result. 2. assign this value to $row 3. we do this AS LONG AS WE ARE ABLE TO FETCH THE ARRAY. that's the while part mysql_fetch_array keeps track of where it is in the array. after each while loop it moves a 'step ahead' in the result when it gets to the end, it can't fetch anymore information from your result. then it returns false. thus, it can't assign a value to $row. thus that statement is false. therefore the while loop exits > > > do stuffs; > > > } > > > > > > someone correct me if I'm wrong? > > > > > > Zeus > > > > Consider yourself corrected :-) mysql_fetch-array returns an array > > corresponding to the fetched row, or _false if there are no more rows_ > > > > So as soon as there are no more rows, $row = mysql_fetch_array($query) > > evaluates to false and the while exits. > > > > -- > > David Robley | WEBMASTER & Mail List Admin > > RESEARCH CENTRE FOR INJURY STUDIES | > > http://www.nisu.flinders.edu.au/ > > AusEinet | > > http://auseinet.flinders.edu.au/ > > Flinders University, ADELAIDE, SOUTH AUSTRALIA > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: php-general-unsubscribe@lists.php.net > For additional commands, e-mail: php-general-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net