#46724 [NEW]: Floating number is not equal!

From: yanan at joit dot com Operating system: WindowsXP PHP version: 5.2.6 PHP Bug Type: Unknown/Other Function Bug description: Floating number is not equal! Description: ------------ <?php $price = 10.05; $f_price = $price * 100; $int_price = floor($f_price); var_dump($f_price==$int_price); ?> The codes below should print bool(true) .But in fact, it prints bool(false) . The same results appear when $price=10.03 or 10.04. However, when $price=10.06, it prints bool(true) . Reproduce code: --------------- <?php $price = 10.05; $f_price = $price * 100; $int_price = floor($f_price); var_dump($f_price==$int_price); ?> Expected result: ---------------- bool(true) Actual result: -------------- bool(false) -- Edit bug report at http://bugs.php.net/?id=46724&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46724&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46724&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46724&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46724&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=46724&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=46724&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46724&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46724&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46724&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46724&r=support Expected behavior: http://bugs.php.net/fix.php?id=46724&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46724&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46724&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46724&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46724&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46724&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46724&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46724&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46724&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46724&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46724&r=mysqlcfg