Bug #73571 [NEW]: foreach() way slower than while(list($key,$value)=each($arr))

From: spam2 at rhsoft dot net Operating system: PHP version: 7.0.13 Package: Performance problem Bug Type: Bug Bug description:foreach() way slower than while(list($key,$value)=each($arr)) Description: ------------ since you depreacte each() with PHP 7.2 better fix foreach() before [harry@srv-rhsoft:/downloads]$ php each.php Extract: 0.031516075134277 While: 0.0004878044128418 For-Each: 0.11238217353821 Test script: --------------- [harry@srv-rhsoft:/downloads]$ cat each.php <?php $loops = 2000; for($x=1;$x<$loops;$x++) { $arr['key' . $x] = 'Test'; } echo "Extract: "; $start = microtime(true); for($x=1;$x<$loops;$x++) { extract($arr, EXTR_SKIP); } echo microtime(true) - $start . "\n"; echo "While: "; $start = microtime(true); for($x=1;$x<$loops;$x++) { while(list($key,$value)=each($arr)) { ${$key} = $value; } } echo microtime(true) - $start . "\n"; echo "For-Each: "; $start = microtime(true); for($x=1;$x<$loops;$x++) { foreach($arr as $key=>$value) { ${$key} = $value; } } echo microtime(true) - $start . "\n"; ?> -- Edit bug report at https://bugs.php.net/bug.php?id=73571&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73571&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73571&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73571&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73571&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73571&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73571&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73571&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73571&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73571&r=support Expected behavior: https://bugs.php.net/fix.php?id=73571&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73571&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73571&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73571&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73571&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73571&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73571&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73571&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73571&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73571&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73571&r=mysqlcfg