PHP - como usar la misma variable en 2 funciones distintas php

public function getConsecutiveByRange($rango)

{

    $sql ="SELECT contador, rango_numeros FROM def_consecutivo WHERE rango_numeros=:rango";

    return $this->getResponseQueryOne($sql, ["rango"=>$rango]);

}

public function putAddConsecutiveClient($noCarteraSap)

{

    $sql ="SELECT iddef_consecutivo, rango_numeros, contador FROM def_consecutivo WHERE :no_cartera_sap  BETWEEN desde AND hasta";

    $modelConsecutivo =  $this->getResponseQueryOne($sql, ["no_cartera_sap"=>$noCarteraSap]);

    $modelConsecutivo->rango = $modelConsecutivo->rango + 1;

    return $this->getResponseQueryOne($sql,[$modelConsecutivo]);

}

global $rango;