From: public at proside dot fr Operating system: WIN XP SP3 PHP version: 5.3.1 PHP Bug Type: Scripting Engine problem Bug description: Concatenate null values gives an empty string
Description: ------------ When you concatenate only NULL values, you got an empty string Reproduce code: --------------- $a = NULL; $b = NULL; $c = $a . $b; echo (is_null($c)) ? 'TRUE' : 'FALSE'; Expected result: ---------------- TRUE Actual result: -------------- FALSE If you look : $c = "" -- Edit bug report at http://bugs.php.net/?id=50801&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50801&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50801&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50801&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50801&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50801&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50801&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50801&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50801&r=needscript Try newer version: http://bugs.php.net/fix.php?id=50801&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50801&r=support Expected behavior: http://bugs.php.net/fix.php?id=50801&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50801&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50801&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50801&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50801&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=50801&r=dst IIS Stability: http://bugs.php.net/fix.php?id=50801&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50801&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50801&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50801&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50801&r=mysqlcfg
