Error after callApi (result of buildPaymentPageUrl) #3
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The sent request does either not contain the request parameter 'id' or it is invalid (e.g. wrong format).
The call from API returns this error. Upon further inspection, I found that this is caused by the buildRequestUrl method which uses http_build_query function which by default uses '&' as a separator. Normally if posting to another php5.3 machine this will not be a problem.
But if you post to a server with a newer PHP version or tomcat java server or something else the & might not be handled properly.
To overcome this specify:
http_build_query($array, '', '&');
and NOT
http_build_query($array);