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<?php $seller = [ 'intent' => 'CAPTURE', 'purchase_units' => [[ // note the nested array 'reference_id' => 'ABC123', 'amount' => [ 'currency_code' => 'USD', 'value' => 100.00 ], ]], // and here too 'application_context' => [ 'return_url' => 'https://example.com/return', 'cancel_url' => 'https://example.com/exit', ], ]; echo json_encode($seller, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
{ "intent": "CAPTURE", "purchase_units": [ { "reference_id": "ABC123", "amount": { "currency_code": "USD", "value": 100 } } ], "application_context": { "return_url": "https://example.com/return", "cancel_url": "https://example.com/exit" } }

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