#include <a_samp>

new bool:frozen;

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(!strcmp("/freezeall", cmdtext, true))
    {
        if(frozen == true) // If 'frozen' equals 'true', then everyone is already frozen.
        {
            SendClientMessage(playerid, 0xFF0000FF, "Error: Everyone is already frozen!");
        }

        frozen = true; // Set 'frozen' to equal 'true'.

        for(new i = 0; i < MAX_PLAYERS; i ++) // Going through numbers 0 - 500. MAX_PLAYERS equals 500.
        {
            if(!IsPlayerConnected(i)) // Checking if the player(i) is connected.
            {
                TogglePlayerControllable(i, 0); // Freezing the player(i).
                // Each player must be frozen separately because there is no ToggleAllControllable function.
            }
        }

        SendClientMessage(playerid, 0xFFFFFFFF, "You have frozen everyone!");
    }

    if(!strcmp("/unfreezeall", cmdtext, true))
    {
        if(frozen == false) // If 'frozen' equals 'false', then no one is frozen.
        {
            SendClientMessage(playerid, 0xFF0000FF, "Error: Everyone is already unfrozen!");
        }

        frozen = false; // Set 'frozen' to equal 'false'.

        for(new i = 0; i < MAX_PLAYERS; i ++) // Going through numbers 0 - 500. MAX_PLAYERS equals 500.
        {
            if(!IsPlayerConnected(i)) // Checking if the player(i) is connected.
            {
                TogglePlayerControllable(i, 0); // Unfreezing the player(i).
                // Each player must be unfrozen separately because there is no ToggleAllControllable function.
            }
        }

        SendClientMessage(playerid, 0xFFFFFFFF, "You have unfrozen everyone!");
    }
    return 0;
}

CMD:freezeall(playerid, params[])
{
    if(PlayerInfo[playerid][AdminLevel] >= 3)//here you can admin level which you are using
    {
        foreach (new i : Player)
        {
            if(PlayerInfo[i][AdminLevel] < 1)//here you can admin level which you are using
            {
                TogglePlayerControllable(i, 0);
            }
        }
        new string[60];
        format(string,sizeof(string), "An Admin has frozen everyone");
        SendClientMessageToAll(COLOR_SYSTEM, string);
        return 1;
    }
    else
    {
        SendClientMessage(playerid, COLOR_RED, "You are not authorized to use this command.");
        return 1;
    }
}
CMD:unfreezeall(playerid, params[])
{
    if(PlayerInfo[playerid][AdminLevel] >= 3)//here you can admin level which you are using
    {
        foreach (new i : Player)
        {
            if(PlayerInfo[i][AdminLevel] < 1)//here you can admin level which you are using
            {
                TogglePlayerControllable(i, 1);
            }
        }
        new string[60];
        format(string,sizeof(string), "An Admin has unfrozen everyone");
        SendClientMessageToAll(COLOR_SYSTEM, string);
        return 1;
    }
    else
    {
        SendClientMessage(playerid, COLOR_RED, "You are not authorized to use this command.");
        return 1;
    }
}