[RIDE2DAY]

PHP код:

new old_Exp[MAX_PLAYERS];
new new_Exp[MAX_PLAYERS];
public OnGameModeExit()
{
    for(new playerid = 0; playerid < MAX_PLAYERS; playerid++)
    {
        TextDrawHideForAll(Rank[playerid]);
        TextDrawDestroy(Rank[playerid]);
        TextDrawHideForAll(Exp[playerid]);
        TextDrawDestroy(Exp[playerid]);
    }
    return 1;
}
public OnPlayerConnect(playerid)
{
    /* I declare new_string just in case of you don't have it. */
    new new_string[15];
    
    new_Exp[playerid] = 0;
    old_Exp[playerid] = 120;
    
    /* You don't have to convert integers to strings in this case, you can use format instead and the %d specifier. */
    format(new_string, sizeof(new_string), "Exp: %d/%d", new_Exp[playerid], old_Exp[playerid]);
    Exp[playerid] = TextDrawCreate(484.000000, 98.559997, new_string);
    TextDrawLetterSize(Exp[playerid], 0.345998, 1.413333);
    TextDrawAlignment(Exp[playerid], 1);
    TextDrawColor(Exp[playerid], -2139094785);
    TextDrawSetShadow(Exp[playerid], 0);
    TextDrawSetOutline(Exp[playerid], 1);
    TextDrawBackgroundColor(Exp[playerid], 51);
    TextDrawFont(Exp[playerid], 1);
    TextDrawSetProportional(Exp[playerid], 1);
    Rank[playerid] = TextDrawCreate(483.999877, 113.493309, "Level: 0 Rank: Beginner");
    TextDrawLetterSize(Rank[playerid], 0.353999, 1.450666);
    TextDrawAlignment(Rank[playerid], 1);
    TextDrawColor(Rank[playerid], -2139094785);
    TextDrawSetShadow(Rank[playerid], 0);
    TextDrawSetOutline(Rank[playerid], 1);
    TextDrawBackgroundColor(Rank[playerid], 51);
    TextDrawFont(Rank[playerid], 1);
    TextDrawSetProportional(Rank[playerid], 1);
    ExpFNL[playerid] = TextDrawCreate(472.000000, 126.186546, "Exp For Next Level: 120");
    TextDrawLetterSize(ExpFNL[playerid], 0.373999, 1.383466);
    TextDrawAlignment(ExpFNL[playerid], 1);
    TextDrawColor(ExpFNL[playerid], -2139094785);
    TextDrawSetShadow(ExpFNL[playerid], 0);
    TextDrawSetOutline(ExpFNL[playerid], 1);
    TextDrawBackgroundColor(ExpFNL[playerid], 51);
    TextDrawFont(ExpFNL[playerid], 1);
    TextDrawSetProportional(ExpFNL[playerid], 1);
    TextDrawShowForPlayer(playerid, Exp[playerid]);
    TextDrawShowForPlayer(playerid, Rank[playerid]);
    TextDrawShowForPlayer(playerid, ExpFNL[playerid]);
     return 1;
}
public OnPlayerDeath(playerid, killerid, reason)
{
    if(killerid != INVALID_PLAYER_ID)
    {
        SendDeathMessage(killerid, playerid, reason);
        GivePlayerMoney(playerid, -GetPlayerMoney(playerid)/2);
        PlayerInfo[killerid][pKills]++;
        PlayerInfo[killerid][pScore]++;
        SetPlayerScore(killerid, PlayerInfo[killerid][pScore]);
        new_Exp[killerid] += 90;
        new_Exp[playerid] -= 90;
          if(new_Exp[playerid] < 0)
        {
            new_Exp[playerid] = 0;
          }
          
        if(new_Exp[killerid] >= 120)
        {
            old_Exp[killerid] += 380; // You missed the + to increase its value, I guess it should be += 120 actually.
             SendClientMessage(killerid,COLOR_YELLOW,"New Level");
          }
          
        /* I declare new_string just in case of you don't have it. */
        new new_string[15];
    
        format(new_string, sizeof(new_string), "Exp: %d/%d", new_Exp[killerid], old_Exp[killer]);
        
        TextDrawSetString(Exp[killerid], new_string);
        TextDrawShowForPlayer(killerid, Exp[killerid]);
        format(new_string, sizeof(new_string), "Exp: %d/%d", new_Exp[playerid], old_Exp[playerid]);
        TextDrawSetString(Exp[playerid], new_string);
        TextDrawShowForPlayer(playerid, Exp[playerid]);
    }
    return 1;
} 


I found many errors there, I added a comment where I could. You should move to PlayerTextdraws by the way.

Stop using ambiguous variable names.

PHP код:

new new_string[10]; // This hurts my eyes.
/* You should use something like: */
new p_CurrentExp[MAX_PLAYERS];
new p_OldExp[MAX_PLAYERS];
new exp_string[15]; 


It's up to you.