Bug #64085 [Fbk->Opn]: microtime(true) undervalued

Edit report at https://bugs.php.net/bug.php?id=64085&edit=1 ID: 64085 User updated by: bugzilla77 at gmail dot com Reported by: bugzilla77 at gmail dot com Summary: microtime(true) undervalued -Status: Feedback +Status: Open Type: Bug Package: Date/time related Operating System: Windows 7 x86/x64 PHP Version: 5.5.0alpha4 Block user comment: N Private report: N New Comment: Imagine that time() and microtime (true) are very similar. The difference is the type of data returned: int and float. The integer part must be the same them at the same moment. Can you imagine this obviousness? PHP 5.5 return values different by 10 seconds! PHP 5.4 will never wrong on the same machine. Previous Comments: ------------------------------------------------------------------------ [2013-01-28 00:53:49] sixd@php.net Regardless of whether it makes sense to compare the two functions, or regardless of whatever Windows system calls the two functions expose, I'd expect time1-time2 to be negative. Please review the testcase and clarify the problem description. ------------------------------------------------------------------------ [2013-01-27 19:03:58] bugzilla77 at gmail dot com Description: ------------ This bug is inaugurated in PHP 5.5: microtime(true) is undervalued up to several seconds! The difference increases in time to work the server (after a few days more than 10 seconds). I am watching now test script -5.2 seconds, after Apache restart difference is positive. I am using Apache 2.2 module on Windows 7 x86/x64. Test script: --------------- microtime(true): <?=$mt=microtime(true)?><br/> time(): <?=$t=time()?><br/><br/> microtime(true) - time(): <?=$mt-$t?><br/><br/> difference should be greater than zero and less than one Expected result: ---------------- PHP 5.4: microtime(true) >= time() microtime(true): 1359313026.5983 time(): 1359313026 microtime(true) - time(): 0.59834909439087 difference should be greater than zero and less than one Actual result: -------------- PHP 5.5: microtime(true) < time() microtime(true): 1359312493.8386 time(): 1359312499 microtime(true) - time(): -5.1614379882812 difference should be greater than zero and less than one ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=64085&edit=1