580001 Invalid request: {0} PayPal (PHP)

Question

I\'m sending userid and password from this page: https://www.paypal.com/us/cgi-bin/webscr?cmd=_profile-api-signature

And the AppId is the ID I use in my android app to c

Answer 1

REQUEST-DATA-FORMAT should be NV:

$headerArray = array(
'X-PAYPAL-SECURITY-USERID:'.$payPalUser_Id,
'X-PAYPAL-SECURITY-PASSWORD:'.$payPalPassword,
'X-PAYPAL-SECURITY-SIGNATURE:'.$payPalSig,
'X-PAYPAL-REQUEST-DATA-FORMAT:NV',
'X-PAYPAL-RESPONSE-DATA-FORMAT:JSON',
'X-PAYPAL-APPLICATION-ID:'.$appID
);