(PHP 4, PHP 5, PHP 7)
Binary-safe gz-file write
int gzwrite ( resource $zp, string $string [, int $length ] )
gzwrite() writes the contents of string to the given gz-file.
Parameters:
zp
The gz-file pointer. It must be valid, and must point to a file successfully opened by gzopen().
string
The string to write.
len