无法通过nusoap Web服务发送Captcha图像

Question

我正在通过我编写的createCaptcha函数创建一个Captcha会话。在Web服务中，我调用这个函数来创建一个Captcha会话和图像，然后我想发送Captcha图像或显示Web服务创建的Captcha图片，用户可以通过Web服务发送它的值，但我面临错误。实际上，当我通过firefox插件soap_client测试它时，我得到的不是指向该图像的链接，而是编码的结果。

知道我哪里错了吗？

captcha功能代码：

<?php
session_start();
function createcaptcha($imgname)
{
    /* Attempt to open */
    $im = @imagecreatefromjpeg($imgname);
    /* See if it failed */
    if(!$im)
    {
        /* Create a black image */
        $code=rand(1000,9999);
        $_SESSION["code"]=$code;
        $im = imagecreatetruecolor(50, 24);
        $bg = imagecolorallocate($im, 22, 86, 165);
        $fg = imagecolorallocate($im, 255, 255, 255);
        imagefill($im, 0, 0, $bg);
        /* Output an captcha code */
        imagestring($im, 5, 5, 5,  $code, $fg);
    }
    return $im;
}  

GetCaptcha肥皂类：

session_start();
include_once('captcha.php');
class getCaptcha extends DBM
{
    public function getcaptcha()
    {
        //creating and generating captcha image and code
        $img = createcaptcha('captcha.png');

        //encoding to base64
        //$base64 = base64_encode($img);
        $path = $img;
        $type = pathinfo($path, PATHINFO_EXTENSION);
        $data = file_get_contents($path);
        $base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
        $save = "/captchafile/captcha.png";
        imagepng($base64, $save);

        $captcha=$save;
        $this->strResult = "";

            $this->strResult.="<captcha>";
            $this->strResult.="<captcha>$captcha</captcha>";
            $this->strResult.="</captcha>";

    }

    function __toString()
    {
        if($this->strResult!=""){
            return $this->strResult;
        }
        return "";
    }

}

Answer 1

您需要给imagepng()函数另一个参数来保存图片，然后使用Get_file_content()函数获取图像文件的内容，然后将其编码到base64，以xml格式通过webservice发送。

include_once('captcha.php');
class getCaptcha extends DBM
{
    public function getcaptcha($dump)
    {
        //creating and generating captcha image and code
        $img = createcaptcha("Captcha.png");
        imagepng($img,"Captcha.png");
        imagedestroy($img);
        $captchafile = file_get_contents('./Captcha.png');
        //encoding to base64
        $base64 = base64_encode($captchafile);

        $captcha=$base64;
        $this->strResult = "";

            $this->strResult.="<captcha>";
            $this->strResult.="<captcha>$captcha</captcha>";
            $this->strResult.="</captcha>";

    }

    function __toString()
    {
        if($this->strResult!=""){
            return $this->strResult;
        }
        return "";
    }

}