How to Authorize and Process a Credit Card Payment Using Direct Payment.curl

DoCapture

Request 
-------
Endpoint URL: https://api-3t.sandbox.paypal.com/nvp
HTTP method: POST
POST data:
USER=insert_merchant_user_name_here
&PWD=insert_merchant_password_here
&SIGNATURE=insert_merchant_signature_value_here
&METHOD=DoCapture
&VERSION=86
&AUTHORIZATIONID=4AA45196YV4521234  #Authorization ID (use the TRANSACTIONID value from the DoDirectPayment response)
&AMT=23    #The amount the payment
&CURRENCYCODE=USD    #The currency, e.g. US dollars
&COMPLETETYPE=Complete    #Set this to complete if you want to void any remaining authorized amount 


Response
--------
AUTHORIZATIONID=4AA45196YV4521234
&ACK=Success
&TRANSACTIONID=37779751K22101234
&PARENTTRANSACTIONID=4AA45196YV4521234
&RECEIPTID=5519%2d4058%2d4751%2d1234
&TRANSACTIONTYPE=webaccept
&PAYMENTTYPE=instant
&ORDERTIME=2012%2d04%2d13T22%3a22%3a38Z
&AMT=23%2e00
&FEEAMT=0%2e97
&TAXAMT=0%2e00
&PAYMENTSTATUS=Completed
...

DoDirectPayment

Request 
-------
Endpoint URL: https://api-3t.sandbox.paypal.com/nvp
HTTP method: POST
POST data:
USER=insert_merchant_user_name_here
&PWD=insert_merchant_password_here
&SIGNATURE=insert_merchant_signature_value_here
&METHOD=DoDirectPayment
&IPADDRESS=127.0.0.1   #Buyer's IP address, recorded to detect possible fraud
&VERSION=86
&PAYMENTACTION=Authorization    #Payment authorization 
&AMT=23    #The amount authorized
&ACCT=4641631486853053    #The credit card number
&CREDITCARDTYPE=VISA    #The type of credit card 
&CVV2=123    #The CVV2 number
&FIRSTNAME=James
&LASTNAME=Smith
&STREET=FirstStreet
&CITY=SanJose
&STATE=CA
&ZIP=95131
&COUNTRYCODE=US
&CURRENCYCODE=USD    #The currency, e.g. US dollars
&EXPDATE=052015    #Expiration date of the credit card


Response
--------
&ACK=Success
&AMT=23%2e00
&CURRENCYCODE=USD
&AVSCODE=X
&CVV2MATCH=M
&TRANSACTIONID=4AA45196YV4521234
...