[Yashas]

Code:

public HealthCheck ()
{
    new Float:fhealth,health,ac_health;
    for(new i = 0;i < maxplayers;i++)
	{
	    if(PlayerAC[i][Alive]) //Will not be set for NPCs to skip AC Checks
	    {
	       	if(PlayerData[i][Disconnecting]) continue;
		    GetPlayerHealth(i,fhealth);
		    health = floatround(fhealth);
		    ac_health = floatround(PlayerAC[i][ACHealth]);
		   	if(PlayerAC[i][ACHealthSync])
		    {
		        //SYNC
		        if(health > 100)
		        {
		            if(!PlayerAC[i][GodMode])
		            {
                  		XA_Ban(i,"Health Hacks","Banned for using Health Hacks/Cheats",SERVER);
		            }
		        }
		        else if(health != ac_health)
			 	{
		      		if(!PlayerAC[i][HHNoticeGiven])
		         	{
		          		PlayerAC[i][HHNoticeGiven] = true;
	              		SendAdminNoticeMessage("%s(%d) is suspected to be using health hacks.",PlayerData[i][Name],i);
					}
		            SetPlayerHealth(i,ac_health);
		            PlayerAC[i][ACHealthSync] = false;
					if(++PlayerAC[i][HealthHackCount] > MAX_HEALTH_HACK_COUNT)
					{
         				XA_Ban(i,"Health Hacks","Banned for using Health Hacks/Cheats",SERVER);
					}
		        }
	    	}
		    else
		    {
		        //CHECK DESYNC
		        if(health!=ac_health)
				{
				   	//DESYNCED
				    new sec  = (++PlayerAC[i][ACHealthDesyncTime] / (1000/AC_HEALTH_CHECK_TIME));
				    if(sec > TIME_FOR_DESYNC_KICK)
					{
					   TimePlayer(i);
					   continue;
					}
					if(sec == (TIME_FOR_DESYNC_KICK>>2))
					{
					    SetPlayerHealth(i,ac_health);
					    PlayerAC[i][ACHealthSync] = false;
					    SendAdminNoticeMessage("PlayerDesync:%s(%d) - Health is desynced - %d seconds since desync",PlayerData[i][Name],i,(TIME_FOR_DESYNC_KICK/4));
						continue;
					}
					if(sec == (TIME_FOR_DESYNC_KICK>>1))
					{
	    				SetPlayerHealth(i,ac_health);
	    				PlayerAC[i][ACHealthSync] = false;
					    SendAdminNoticeMessage("PlayerDesync:%s(%d) - Health is desynced - %d seconds since desync",PlayerData[i][Name],i,(TIME_FOR_DESYNC_KICK/2));
						continue;
					}
				}
				else
				{
				    PlayerAC[i][ACHealthDesyncTime]  = PlayerAC[i][HealthHackCount] = 0;
				    PlayerAC[i][ACHealthSync] = true;
				}
	   		}
		}
	}
}

Concept/Idea for getting players in sync before banning them

All the health changes are server sided.

This code is from my server from 2013 so it may be outdated.