RE: [PHP-DEV] PHP 4.0 Bug #8139 Updated: NULL and isset

> -----Original Message----- > From: richard.heyes@heyes-computing.net > [mailto:richard.heyes@heyes-computing.net] > Sent: Thursday, December 07, 2000 09:22 > To: php-dev@lists.php.net > Subject: [PHP-DEV] PHP 4.0 Bug #8139 Updated: NULL and isset > > > ID: 8139 > User Update by: richard.heyes@heyes-computing.net > Old-Status: Feedback > Status: Open > Bug Type: Scripting Engine problem > Description: NULL and isset > > No idea. Though I do know of people who use that method to > set variables, so their answer would be a resounding no. :) Surely if passing an unset variable by reference doesn't work as the first guy indicated, and if the user were trying to set a mysql handle as in your case, they would want to be warned if it didn't work (likely they had mis-spelled the variable). Personally I would like such use to immediatly set the variable and not have the warning. But the current described behaviour of neither working nor warning seems without benefit. Sam > > (EG: > <?php > function mconnect(&$link){ > $link = mysql_connect(); > } > > mconnect($db); > ?> > ) > > Previous Comments: > -------------------------------------------------------------- > ------------- > > [2000-12-06 13:18:04] joey@php.net > The question is: should passing an unset variable by reference > generate a warning? > > -------------------------------------------------------------- > ------------- > > [2000-12-06 12:57:39] richard.heyes@heyes-computing.net > <?php > function foo(&$bar){ > return TRUE; > } > > foo($bar); > > print($bar); > > if(!isset($bar)) > print('Bar is not set!'); > ?> > > With notices turned on (error_reporting) the call to > print($bar) does not throw an error. However the bit below it > runs the print() call. So if it's not set, the first print > should throw an error regarding the unset $bar. Seems very > contradictory. FWIW the type of $bar after the call to foo() is NULL. > > -------------------------------------------------------------- > ------------- > > > Full Bug description available at: http://bugs.php.net/?id=8139 > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: > php-list-admin@lists.php.net >