Bug #81222 [Opn]: ZipArchive Deletes 0-length file

Edit report at https://bugs.php.net/bug.php?id=81222&edit=1 ID: 81222 User updated by: eclipsechasers2 at yahoo dot com Reported by: eclipsechasers2 at yahoo dot com Summary: ZipArchive Deletes 0-length file Status: Open Type: Bug Package: Filesystem function related Operating System: Windows 10 PHP Version: 7.4.21 Block user comment: N Private report: N New Comment: It looks like the problem can occur with non-zero-length files as well, though not as predictably. Previous Comments: ------------------------------------------------------------------------ [2021-07-04 06:45:13] eclipsechasers2 at yahoo dot com Description: ------------ On Windows, when a zero-length file is opened as a ZipArchive, the file is deleted when the zip is closed. This seems to happen in all releases of PHP. It does not seem to happen on Linux systems. Test script: --------------- <?php $filename = 'zerolengthfile.zip'; file_put_contents($filename, ''); assert(file_exists($filename)); $zip = new ZipArchive(); $zip->open($filename); $zip->close(); assert(file_exists($filename)); Expected result: ---------------- I expect the assert at the end to not issue a message. I also expect zerolengthfile.zip to exist. Actual result: -------------- Warning: assert(): assert(file_exists($filename)) failed in C:\phpexceltest\Owen \testfile2.php on line 8 zerolengthfile.zip does not exist If the $zip->close() statement is removed, the assert at the end does not issue a message. Nevertheless, zerolengthfile.zip does not exist when the script terminates. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=81222&edit=1