Something

if (strcmp(cmdtext, "/r", true)==0)
    if (TEAM_COP[playerid]==0) {
        SendPlayerFormattedText(playerid,"The police radio is for cops only",0);
} else {
  new gangChat[256];
      new senderName[MAX_PLAYER_NAME];
      new string[256];
strmid(gangChat,text,1,strlen(text));
GetPlayerName(playerid, senderName, sizeof(senderName));
format(string, sizeof(string),"[Police Radio] %s: %s", senderName, gangChat);
  for (new i = 0; i < MAX_PLAYERS; i++)
{
if (IsPlayerConnected(i) && Cop[i] == 1) {
SendClientMessage(i, COLOR_LIGHTBLUE, string);
    }
}
}
return 0;
}
return 0;
}