[Alternative112]

You aren't getting the person's ban information yet - you need to open the person's character file and assign something to PInfo[playerid][Banned] before you check it to see if they're banned or not.

Код:

new filename[64], name[24];
GetPlayerName(playerid, name, sizeof(name));
format(filename, sizeof(fiilename), "/scriptfiles/players/%s.txt", name);
if(fexist(filename)) {
	new lines_read = 0;
	new File:f = fopen(filename, io_read);		//open file
	while(fread(f, line))		//read from file {
		switch(lines_read) {
			case 0:	//This is the first line in the file, change it to whatever the line number the ban number is on. {
                                PInfo[playerid][Banned] = 
                         }
                 }
         }
        fclose(f);
}

if(PInfo[playerid][Banned] == 1){
           SendClientMessage(playerid, 0xFF444499, "You are banned from this server if this is a mistake appeal at our forums");
           Kick(playerid);
}

I'll let you figure out the rest.