I would say that the second one is chars.
PHP Code:
new gVariable [32] [33]
means that you can store32 items (strings) and each can have up to 32 chars (if you wans to store strings, othevice you can store 33 numbers).
For example you can store player names:
PHP Code:
new maxPlayers = get_maxplayers();
for(new i=1;i<maxPlayers;i++){
if(is_user_connected(i)){
get_user_name(i, gVariable[i], 32);
}
}