Reads up to length
bytes from an open directory entry. If
length is not specified, then zip_entry_read() will attempt to read 1024
bytes. The parameter
zip_entry is a valid directory entry returned by
zip_read().
注: The length parameter should be the uncompressed length you wish to read.
Returns the data read, or
FALSE if the end of the file is reached.
See also zip_entry_open(),
zip_entry_close() and
zip_entry_filesize().