void CALLBACK cmd_show_info_player( std::string param )
{
   if ( param.empty() ) return;
   int    i = std::stoi( param );

   char buf[128];

   stRemotePlayer *pPlayer = SF->getSAMP()->getPlayers()->pRemotePlayer[ i ];

   if(!pPlayer) return;

   sprintf( buf, "Nickname - %s, Ping - %d, Score - %d, isNPC - %d, AFKState - %d",
       pPlayer->szPlayerName,
       pPlayer->iPing,
       pPlayer->iScore,
       pPlayer->iIsNPC,
       pPlayer->pPlayerData->iAFKState == 2 );

   SF->getSAMP()->getChat()->AddChatMessage( -1, buf );
};

And in Mainloop:
SF->getSAMP()->registerChatCommand( "showinfo", cmd_show_info_player );

stRemotePlayer *pPlayer = SF->getSAMP()->getPlayers()->pRemotePlayer[ Informer_Target_PlayerID ];
if(!pPlayer) return;
sprintf(ctarget_ping_score, "{8cff00}Ping{FFFFFF} %d{007bff} Score{FFFFFF} %d ", pPlayer->iPing, pPlayer->iScore);