[Konstantinos]

You could've found how to do it if you searched for it.

pawn Код:

public OnPlayerText( playerid, text[ ] )
{
    new 
        msg[ 128 ]
    ;
    format( msg, sizeof( msg ), "[%d] : %s", playerid, text );
    SendPlayerMessageToAll( playerid, msg );
    return 0;
}