sendsplitmsg example

public OnPlayerText ( playerid, text [] ) {
    new fString [ 256 ];

    if ( strlen ( fString ) > 144) {
        return false;
    }

    format ( fString, sizeof ( fString ),
        "%s says: %s", GetName (playerid), text );

    SendNearbyMessage ( playerid, 0xffffffAA, fString, 5.0 );

    return false;
}

SendNearbyMessage ( playerid, color, string [ 256 ], Float: radius ) {
    new Float: pX, Float: pY, Float: pZ;
    GetPlayerPos ( playerid, pX, pY, pZ );

    foreach(new i: Player) {
        if ( IsPlayerInRangeOfPoint ( i, radius, pX, pY, pZ ) ) {

            SendSplitMessage ( i, color, string );
        }
    }
}