Code
GateNickCheck(playerid)
{
new name[MAX_PLAYER_NAME];
GetPlayerName(playerid,name,MAX_PLAYER_NAME);
new File: file = fopen("players_gates.txt", io_read);
if (file)
{
new filename[256];
while(fread(file,filename,sizeof(filename)))
{
if(strcmp(filename,name,true) == 0) return 1;
}
fclose(file);
}
return 0;
}
Пример функции. Куда ее впихнуть - сам думай