Bug #72017 [NEW]: range() with float step produces unexpected result

From: contact at rarst dot net Operating system: Windows 7 x64 PHP version: 7.0.5 Package: Arrays related Bug Type: Bug Bug description:range() with float step produces unexpected result Description: ------------ Running this call range( 4.5, 4.2, 0.1 ) with these specific numbers (discovered empirically, other ranges might not demonstrate the issue). I expect result to be: array(4) 4.5, 4.4, 4.3, 4.2 I observe result to be: array(3) 4.5, 4.4, 4.3 I've run this in online checker and it reported expected result up to version 7.0.2 and unexpected result starting from 7.0.3, see https://3v4l.org/BbS2k Test script: --------------- var_dump( range( 4.5, 4.2, 0.1 ) ); Expected result: ---------------- array(4) { [0]=> float(4.5) [1]=> float(4.4) [2]=> float(4.3) [3]=> float(4.2) } Actual result: -------------- array(3) { [0]=> float(4.5) [1]=> float(4.4) [2]=> float(4.3) } -- Edit bug report at https://bugs.php.net/bug.php?id=72017&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72017&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72017&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72017&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72017&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72017&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72017&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72017&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72017&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72017&r=support Expected behavior: https://bugs.php.net/fix.php?id=72017&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72017&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72017&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72017&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72017&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72017&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72017&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72017&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72017&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72017&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72017&r=mysqlcfg