protected function getMappedKeyIndex($mappedKey, $key)
    {
        $startSize = strlen($this->getStartMapDelimiter()) - 1;
        $key = substr($key, $startSize, strrpos($key, $this->getEndMapDelimiter())-$startSize);
        return substr($mappedKey, strlen($key . self::MAPPED_KEY_SEPARATOR));
    }
protected function getMappedKeyIndex($mappedKey, $key)
    {
        $startSize = strlen($this->getStartMapDelimiter()) - 1;
        $key = substr($key, $startSize, strrpos($key, $this->getEndMapDelimiter())-$startSize);
        return substr($mappedKey, strlen($key . self::MAPPED_KEY_SEPARATOR));
    }
protected function getMappedKeyIndex ( $ mappedKey , $ key ) { $ startSize = strlen ( $ this -> getStartMapDelimiter ( ) ) - 1 ; $ key = substr ( $ key , $ startSize , strrpos ( $ key , $ this -> getEndMapDelimiter ( ) ) - $ startSize ) ; return substr ( $ mappedKey , strlen ( $ key . self :: MAPPED_KEY_SEPARATOR ) ) ; }
Get the mapped key index of a mappedKey

@param $mappedKey
@param $key
@return bool|string
Get the mapped key index of a mappedKey