Bug #79423 [PATCH]: copy command is limited to size of file it can copy

Edit report at https://bugs.php.net/bug.php?id=79423&edit=1 ID: 79423 Patch added by: cmb@php.net Reported by: jeff at forerunnertv dot com Summary: copy command is limited to size of file it can copy Status: Verified Type: Bug Package: Filesystem function related Operating System: windows PHP Version: 7.3.16 Assigned To: cmb Block user comment: N Private report: N New Comment: The following pull request has been associated: Patch Name: Fix #79423: copy command is limited to size of file it can copy On GitHub: https://github.com/php/php-src/pull/5319 Patch: https://github.com/php/php-src/pull/5319.patch Previous Comments: ------------------------------------------------------------------------ [2020-03-29 12:53:39] cmb@php.net This is a Windows only issue, and is because we're not properly retrieving the file size when mmapping. After this is fixed, on 32bit systems files up to 4294967295 bytes can be copied; 64bit systems practically have no limit. ------------------------------------------------------------------------ [2020-03-28 23:43:20] requinix@php.net Copies exactly 1GB. Affects other functions like stream_copy_to_stream() as well. There may be an existing bug report for this problem. ------------------------------------------------------------------------ [2020-03-28 23:19:41] jeff at forerunnertv dot com <?php $from = "C:\myBigFile.mp4"; // Needs to be a big ile, like 5GB or 6GB $to = "C:\myBigFile_COPY.mp4"; copy($from, $to); ?> ------------------------------------------------------------------------ [2020-03-28 22:44:15] requinix@php.net Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. ------------------------------------------------------------------------ [2020-03-27 21:01:27] jeff at forerunnertv dot com Description: ------------ --- From manual page: https://php.net/function.copy --- I am pretty sure there is some kind of limit to the size of file that the copy command can actually copy on Windows 10. For example if I try to copy a 5GB+ file, it will return as succesful, but will not actually copy the whole file. Could this limitation be confirmed and added to the documentation? Thanks ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79423&edit=1