关于PHP QR码库（第1部分）

Question

我正在使用PHP QR Code library 以下是我的代码：

testqr.php

package cmisproject3;

public class Sequence {

    private static int efficiency = 0;

    // method to compute iterative
    public static int computeIterative(int n) {
        int result = 0;
        efficiency = 0;
        if (n == 0) {
            result = 0;
        } else if (n == 1) {
            result = 1;
        } else {
            int secondPrevious = 0;
            int previous = 1;
            for (int i = 2; i <= n; i++) {
                efficiency++;
                result = 2 * previous + secondPrevious;
                secondPrevious = previous;
                previous = result;
            }
        }
        return result;
    }

    // method to comopute recursive
    public static int computeRecursive(int n) {
        efficiency = 0;
        return computeRecursiveHelper(n);
    }

    private static int computeRecursiveHelper(int n) {
        if (n == 0) {
            return 0;
        } else if (n == 1) {
            efficiency++;
            return 1;
        } else {
            efficiency++;
            return 2 * computeIterative(n - 1) + computeIterative(n - 2);
        }
    }

    public static int getEfficiency() {
        return efficiency;
    }
}

从上面的代码中，它将在网页上显示qr代码并保存图像文件。

我的问题是，我可以在网页上显示qr代码而不保存图像文件吗？