From: for-bugs at hnw dot jp Operating system: MacOSX PHP version: 5.3.0alpha1 PHP Bug Type: Variables related Bug description: $something == NaN returns true with PHP 5.3.0, which returns false until 5.2.6
Description: ------------ There is == operator's problem dealing with NaN(Not a Number) in PHP 5.3.0alpha1. This behavior is different with PHP 5.0.0-5.2.6, so this is compatibility problem. Reproduce code: --------------- <?php $nan = (-1e300*1e300)/(1e300*1e300); // float(NAN) var_dump($nan==''); var_dump($nan==0.5); var_dump($nan==50); var_dump($nan=='500'); var_dump($nan=='abc'); var_dump($nan==$nan); Expected result: ---------------- bool(false) bool(false) bool(false) bool(false) bool(false) bool(false) Actual result: -------------- bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) -- Edit bug report at http://bugs.php.net/?id=45712&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45712&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45712&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45712&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=45712&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=45712&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=45712&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=45712&r=needscript Try newer version: http://bugs.php.net/fix.php?id=45712&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=45712&r=support Expected behavior: http://bugs.php.net/fix.php?id=45712&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=45712&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=45712&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=45712&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45712&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=45712&r=dst IIS Stability: http://bugs.php.net/fix.php?id=45712&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=45712&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=45712&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=45712&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=45712&r=mysqlcfg
