Mine

public OnPlayerDisconnect(playerid)
{
	new File:stats = fopen("stats.txt", io_append);
	new pname[MAX_PLAYER_NAME];
	new str[256], str2[256];
	GetPlayerName(playerid, pname, 256);
	while(fread(stats, str)) {
	    if(strcmp(str, pname, true, strlen(pname))==0) {
	    	format(str2, 256, " %d %d", gPlayerDeaths[playerid], gPlayerKills[playerid]);
	        strdel(str, strlen(pname), strlen(pname)+4);
	        strins(str, str2, strlen(pname));
		  	fwrite(stats, str);
		}
		else {
			format(str2, sizeof(str2), "\r\n%s %d %d\n\r", pname, gPlayerDeaths[playerid], gPlayerKills[playerid]);
		 	fwrite(stats, str2);
			fclose(stats);
		}
	}

	//format(str2, sizeof(str2), "\r\n%s %d %d\n\r", pname, gPlayerDeaths[playerid], gPlayerKills[playerid]);
 	//fwrite(stats, str2);
	//fclose(stats);
   	return 1;
}