#41939 [NEW]: Bizarre behaviour testing a variable

From: steve at tequilasolutions dot com Operating system: FC4 PHP version: 5.2.3 PHP Bug Type: Variables related Bug description: Bizarre behaviour testing a variable Description: ------------ I have a variable set to 0. if ($var=="on") returns true!! This behaviour is not there in php4 Reproduce code: --------------- admin@ds1009# php -v PHP 4.3.11 (cgi) (built: Jun 16 2005 17:25:40) Copyright (c) 1997-2004 The PHP Group admin@ds1009# php <? $val = 0; if ($val=="on") print "on\n"; ?> admin@ds1009# php5 <? $val = 0; if ($val=="on") print "on\n"; ?> on admin@ds1009# php5 <? $var = 0; if ($var=='anything') print "anything"; ?> anythingadmin@ds1009# This bug is also in PHP/5.0.4 and may have been there since then. admin@ds1009# Expected result: ---------------- 0 should not equal 'on' or 'anything' -- Edit bug report at http://bugs.php.net/?id=41939&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=41939&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=41939&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=41939&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=41939&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=41939&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=41939&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=41939&r=needscript Try newer version: http://bugs.php.net/fix.php?id=41939&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=41939&r=support Expected behavior: http://bugs.php.net/fix.php?id=41939&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=41939&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=41939&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=41939&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41939&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=41939&r=dst IIS Stability: http://bugs.php.net/fix.php?id=41939&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=41939&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=41939&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=41939&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=41939&r=mysqlcfg