Windows Support
File descriptors are opened in shared read/write/delete mode by default. This effectively maps the POSIX semantics and allows to delete files with handles in use. It is not 100% same, some platform differences still persist. After the deletion, the filename entry is blocked, until all the opened handles to it are closed.
PHP Core
More POSIX Conforming File Deletion
File descriptors are opened in shared read/write/delete mode by default. This effectively maps the POSIX semantics and allows to delete files with handles in use. It is not 100% same, some platform differences still persist. After the deletion, the filename entry is blocked, until all the opened handles to it are closed.