dcmd_heal( playerid, params[] )
{
	if( !strlen( params ) ) // The player didn't use any parameter, so send a Usage message.
		return SendClientMessage( playerid, 0xFFAA00, "Usage: /heal [id / all]" );

	if( strcmp( params, "all", true, 3 ) == 0 ) // The player typed "/heal all"
	{
		for( new i = 0; i < MAX_PLAYERS; i++ ) // Loop through all players and set their health to 100
			SetPlayerHealth( i, 100 );

		SendClientMessage( playerid, OxFFAA00, "All players healed" );
	}
	else // The player didn't type "/heal all" so we assume they used a player ID
	{
		new id = strval( params ); // The variable id will be the value of the parameter.
		SetPlayerHealth( id, 100 );
		SendClientMessage( playerid, 0xFFAA00, "Player healed." );
		SendClientMessage( id, 0xFFAA00, "You've been healed." );
	}
	return true;
}