[SmiT]

Here you go:

pawn Code:

CMD:family(playerid, params[])
{
    if ( isnull ( params ) ) return SendClientMessage( playerid, -1, #Usage /family <text> );
   
    new
        pName[ MAX_PLAYER_NAME ],
        _message[ 128 ]
    ;
    
    GetPlayerName( playerid, pName, MAX_PLAYER_NAME );
    
    if ( PlayerInfo[ playerid ][ pLider ] == 5 || PlayerInfo[ playerid ][ pMember ] == 5 )
    {
        
        format( _message, sizeof ( _message ), "[Family nr.5] %s: %s", pName, params );
        for ( new i = 0; i != MAX_PLAYERS; ++i )
        {
            if ( PlayerInfo[ i ][ pLider ] == 5 || PlayerInfo[ i ][ pMember ] == 5 )
                SendClientMessage( i, -1, _message );
        }
    }
    
    else if ( PlayerInfo[ playerid ][ pLider ] == 4 || PlayerInfo[ playerid ][ pMember ] == 4 )
    {
        
        format( _message, sizeof ( _message ), "[Family nr.4] %s: %s", pName, params );
        for ( new i = 0; i != MAX_PLAYERS; ++i )
        {
            if ( PlayerInfo[ i ][ pLider ] == 4 || PlayerInfo[ i ][ pMember ] == 4 )
                SendClientMessage( i, -1, _message );
        }
    }
    
    else return SendClientMessage( playerid, -1, #You are not in a family );
   
    return ( 1 );
}