lib/PHPExif/Exif.php
public function getCredit()
    {
        if (!isset($this->data[self::CREDIT])) {
            return false;
        }

        return $this->data[self::CREDIT];
    }
public function getCredit()
    {
        if (!isset($this->data[self::CREDIT])) {
            return false;
        }

        return $this->data[self::CREDIT];
    }
Returns the Credit

@return string|boolean