PECL xdiff >= 1.5.0
xdiff_file_bdiff_size - Read a size of file created by applying a binary diff
xdiff_file_bdiff_size( string$file ): int
Returns a size of a result file that would be created after applying binary patch from file file to the original file.
The path to the binary patch created by xdiff_string_bdiff or xdiff_string_rabdiff function.
Returns the size of file that would be created.
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