#37683 [NEW]: Comparison operator fails with certain numbers

From: jeb at webco dot tv Operating system: Linux / Ubuntu or Fedora PHP version: 5.1.4 PHP Bug Type: Math related Bug description: Comparison operator fails with certain numbers Description: ------------ Code 1 listed below does not work as expected. Code 2 does. Interesting bug. If I replace the "<= 0.01" with "< 0.02", it does work as expected. Reproduce code: --------------- Code 1: $data['low'] = 0.04; $data['high'] = 0.05; if ($data['high'] - $data['low'] <= 0.01) print "it works"; Code 2: $data['low'] = 0.02; $data['high'] = 0.03; if ($data['high'] - $data['low'] <= 0.01) print "it works"; Expected result: ---------------- Both instances should print "it works." Actual result: -------------- Code 1 prints nothing. Code 2 prints "it works". -- Edit bug report at http://bugs.php.net/?id=37683&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=37683&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=37683&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=37683&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=37683&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=37683&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=37683&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=37683&r=needscript Try newer version: http://bugs.php.net/fix.php?id=37683&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=37683&r=support Expected behavior: http://bugs.php.net/fix.php?id=37683&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=37683&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=37683&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=37683&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=37683&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=37683&r=dst IIS Stability: http://bugs.php.net/fix.php?id=37683&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=37683&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=37683&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=37683&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=37683&r=mysqlcfg