Bug #76220 [NEW]: Float variables comparison error

From: zyrlex at yandex dot ru Operating system: Ubuntu 16.04 PHP version: 7.0.29 Package: Variables related Bug Type: Bug Bug description:Float variables comparison error Description: ------------ Comparison of variables does not give a positive result 2.7 !== 2.7 Test script: --------------- $q1 = floatval(2.7); $q2 = floatval(18*0.15); //18*0.15 = 2.7 var_dump($q1); var_dump($q2); if($q1 === $q2) { echo '2.7 === 2.7 all ok'; } else { echo '2.7 !== 2.7 BUG'; //Why? } if($q1 == $q2) { echo '2.7 == 2.7 all ok'; } Expected result: ---------------- float(2.7) float(2.7) 2.7 === 2.7 all ok Actual result: -------------- float(2.7) float(2.7) 2.7 !== 2.7 BUG -- Edit bug report at https://bugs.php.net/bug.php?id=76220&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76220&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76220&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76220&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76220&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76220&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76220&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76220&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76220&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76220&r=support Expected behavior: https://bugs.php.net/fix.php?id=76220&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76220&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76220&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76220&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76220&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76220&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76220&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76220&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76220&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76220&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76220&r=mysqlcfg