[DeeadPool]

Here you go with the stock.

Код:

stock Float:GetPlayerDistanceFromPlayer(playerid, targetid)
{
	new	Float:fDist[3];
	GetPlayerPos(playerid, fDist[0], fDist[1], fDist[2]);
	return GetPlayerDistanceFromPoint(targetid, fDist[0], fDist[1], fDist[2]);
}

Use this. Like,

if(GetPlayerDistanceFromPlayer(playerid, id) < 5.0)
{
//your code
}