[admantis]

It's better to use it because it will skip players are not connected and save memory, else it will just set health of a player that's not even connected.

pawn Код:

for(new i = 0; i < MAX_PLAYERS; i++)
{
    if (!IsPlayerConnected(i)) continue;
    SetPlayerPos(i, x, y, z);
}

I still and will always recommend foreach, easy and faster than ever loops.

pawn Код:

foreach(Player, i)
{
    SetPlayerPos(i, x, y, z);
}

Checking if the player is online is not even needed in that case.