gzread reads up to length bytes from the given gz-file pointer. Reading stops when length (uncompressed) bytes have been read or EOF is reached, whichever comes first.
The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen.
The number of bytes to read.
The data that have been read, or false on failure.
|7.4.0||This functions returns false on failure now; previously 0 was returned.|