Reads a file, decompresses it and writes it to standard
output.
readgzfile() can be used to read
a file which is not in gzip format; in this case readgzfile() will directly read from the file
without decompression.
Returns the number of (uncompressed) bytes read from the
file. If an error occurs,
FALSE is returned and unless the function was called
as @readgzfile, an error message is
printed.
The file filename will
be opened from the filesystem and its contents written to
standard output.
You can use the optional second parameter and set it to
"1", if you want to search for the file in the
include_path, too.
See also gzpassthru(), gzfile(),
and
gzopen().