just a little update after playing arround with this stuffs, I think this behavior happens when there is nothing else pointing to variable $a. so for example, this works also:
$tmp =& $a; $a =& $a->next; I'm wondering how php does garbage collection? does it immediately delete variables that have nothing pointing to it? - reynard >hi, > >I just found this behavior when trying to implement a linked list with php. >In linked list it's common to say: >$a =& $a->next; >when traversing the list. but this doesn't work (it gives segmentation fault when >trying to access the $head->next object (after the above assignment). >but this work: > >$tmp =& $a; >$a =& $tmp->next; > >I don't know if this can be considered a bug or if it's designed to work that way. >But I think it would be nice to be able to do it without creating temporary variable. > > >here is the full code. I'm using php 4.2.2 and I'm running the code from comand line. >(if I execute it from the web it gives something like 'document contains no data' >instead of segmentation fault) > __________________________________________________________________ The NEW Netscape 7.0 browser is now available. Upgrade now! http://channels.netscape.com/ns/browsers/download.jsp Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
