Hyperlink to php with arcade

[TimSemmelhaack]

I want to create a hyperlink to picture which is returned by a php-Site with parameter. 

The arcade expression works fine

var urlsource = "https://www.xxx.de/image.php?";

var params =

  hstnr: $feature.haltestellen_hstnr,

  mastnr: mast,

  position: 0,

  type: 0

;

return urlsource + UrlEncode(params);

But the link in the popup include additional strings per parameter '#38' so that the browser can't the file. (https://www.xxx.de/image.php?hstnr=1090543&mastnr=2&position=0&type=0)

The idea is to create link which also works with php-paramters (&=xxx)