Stream wrappers: filesnap
Rick Hodger (contact me)
This class implements a stream wrapper that can write and read snapshots of files.
It can open a file for writing. If a previous version exist, it copies that version to a snapshot file.
The class may also open a file for reading using an optional date parameter to tell the class to open the snapshot version of the file that existed on the given date.
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Php Handleiding