Bug #54237 [Opn->Csd]: Fatal error: Out of memory

Edit report at https://bugs.php.net/bug.php?id=54237&edit=1 ID: 54237 Updated by: cmb@php.net Reported by: jsakk at mailmetrash dot com Summary: Fatal error: Out of memory -Status: Open +Status: Closed Type: Bug Package: Unknown/Other Function Operating System: Windows 2008 64bit PHP Version: 5.3.5 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: I'm pretty sure that as of PHP 7.0.0 you can allocate more than 2 GiB on Windows x64 (I'm absultely sure wrt. the actively supported PHP versions[1]). On Windows x86, you can allocate up too 2 GiB, and possibly up to 4 GiB (LAA), but not more. [1] <https://www.php.net/supported-versions.php> Previous Comments: ------------------------------------------------------------------------ [2017-01-31 16:38:25] mikeotown at msn dot com Was it ever determined if PHP on 64-bit Windows can only address 2GB of memory? I'm having a similar issue on a 64-bit machine running Windows 10. ------------------------------------------------------------------------ [2011-03-12 21:31:16] pajoye@php.net But PHP bins are 32bit. It should be possible to alloc more than 2^32 but I'm not sure it is safe to do it in PHP, given that many places rely on long instead of size_t to work with buffers. ------------------------------------------------------------------------ [2011-03-12 21:27:35] jsakk at mailmetrash dot com holy molly I think you're right but still not 100% sure. Got to figure out why my C code can allocate more as 32 bit app now. Just so I understand better there is no 64 bit php version for Windows but there is for *nix? Thank you rasmus and pajoye! ------------------------------------------------------------------------ [2011-03-12 21:07:22] rasmus@php.net Well, a signed 32-bit integer only gives you 2147483648 so it isn't that far off. ------------------------------------------------------------------------ [2011-03-12 21:01:04] jsakk at mailmetrash dot com Also even if that was the case a 32bit program should still be able to access more then 1901MB of RAM. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=54237 -- Edit this bug report at https://bugs.php.net/bug.php?id=54237&edit=1