#19229 [NEW]: isset() handles NULL values incorrectly

From: flying@dom.natm.ru Operating system: Windows 2000 PHP version: 4.2.2 PHP Bug Type: Scripting Engine problem Bug description: isset() handles NULL values incorrectly Take a look at the following example: <?php $array = array('foo',null,'bar'); foreach($array as $key=>$value) echo "Set: ".((isset($array[$key]))?'yes':'no')."\nValue: ".serialize($value)."\n\n"; ?> It returns following result: Set: yes Value: s:3:"foo"; Set: no Value: N; Set: yes Value: s:3:"bar"; As you can see - isset() returns FALSE for array item, containing NULL value, but it should return TRUE because array item itself is set and have value. -- Edit bug report at http://bugs.php.net/?id=19229&edit=1 -- Try a CVS snapshot: http://bugs.php.net/fix.php?id=19229&r=trysnapshot Fixed in CVS: http://bugs.php.net/fix.php?id=19229&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=19229&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=19229&r=needtrace Try newer version: http://bugs.php.net/fix.php?id=19229&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=19229&r=support Expected behavior: http://bugs.php.net/fix.php?id=19229&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=19229&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=19229&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=19229&r=globals