Bug #72517 [Opn]: file_exists(), is_file() and stat() report wrong result

Edit report at https://bugs.php.net/bug.php?id=72517&edit=1 ID: 72517 User updated by: stgrein at gmail dot com Reported by: stgrein at gmail dot com Summary: file_exists(), is_file() and stat() report wrong result Status: Open Type: Bug Package: Filesystem function related -Operating System: +Operating System: Windows PHP Version: 7.0.8 Block user comment: N Private report: N New Comment: Additional information: I used the VC14 x64 Thread Safe build from windows.php.net Previous Comments: ------------------------------------------------------------------------ [2016-06-29 20:08:20] stgrein at gmail dot com Description: ------------ Hi, functions which check if a file exists do report wrong results sometimes. I did not find a special pattern, but maybe higher load is triggering it more. The chance on my machine is around ~1% to hit the bug per function call. I am using PHP v7.0.8 now but also had this bug on PHP v7.0.7. I did not test with earlier Versions. Test script: --------------- <?php //check an existing file $a = file_exists("/this/file/exists"); if($a === true) { echo "File exists!"; //expected } else { echo "File does NOT exists!"; //bug hit } //expected output: //File exists! //chance to get this output is around 1% on my machine under load //File does NOT exists! ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=72517&edit=1