On Wed, Oct 20, 2010 at 10:44 AM, David Harkness <david.h@xxxxxxxxxxxxxxxxx> wrote: > On Wed, Oct 20, 2010 at 5:00 AM, Tommy Pham <tommyhp2@xxxxxxxxx> wrote: >> >> Shouldn't that be $row = null since unset will remove the last value, not >> just removing the variable also, from the array whereas the $row = null >> will >> tell the reference pointer that it doesn't point to a value. > > No, that would assign null to the last array element. References allow you > to assign any value--including null--to the container they reference. > Unsetting a reference breaks the reference without affecting whatever it > references. > > ÂÂÂ $x = 5; > ÂÂÂ $y = &$x; > ÂÂÂ $y = null; > ÂÂÂ print_r($x); > ÂÂÂ var_dump($x); > > ÂÂÂ --> NULL > > David > hmm.. About 8-9 years ago I did a project where I used the reference in a foreach loop as the OP. unset not only remove the variable but also the value in the array. I tried several methods at that time and ended up assigning null to get what I wanted without modifying the array. I'll have to dig up that project later to see. Thanks, Tommy -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
