Bug #75098 [NEW]: Unexpected output

From: coolbalyan at gmail dot com Operating system: window PHP version: 7.1.8 Package: *General Issues Bug Type: Bug Bug description:Unexpected output Description: ------------ When script subtract value from two "microtime", it produce value in unexpected way. script take almost a fraction on second but substraction of value from taken from "microtime" make it incremented. it looks like it taking near around 9-10 seconds. Test script: --------------- $time_start=microtime(TRUE); /****Performance Check****/ $time_end=microtime(TRUE); var_dump(PHP_VERSION, $time_end-$time_start); Expected result: ---------------- 0 Actual result: -------------- 9.5367431640625E-7 -- Edit bug report at https://bugs.php.net/bug.php?id=75098&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75098&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75098&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75098&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75098&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75098&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75098&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75098&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75098&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75098&r=support Expected behavior: https://bugs.php.net/fix.php?id=75098&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75098&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75098&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75098&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75098&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75098&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75098&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75098&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75098&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75098&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75098&r=mysqlcfg