What are the key components that need to be included when sending data to PayPal for IPN processing?

When sending data to PayPal for IPN processing, the key components that need to be included are the payment notification URL, the transaction details such as the payment amount and currency, and the receiver email address. This information is necessary for PayPal to verify the transaction and send the appropriate notifications. 

// Set up the data to send to PayPal for IPN processing
$data = [
    'cmd' => '_notify-validate',
    // Add transaction details here such as payment amount, currency, etc.
    'receiver_email' => 'your_email@example.com',
    // Add any other necessary data for verification
];

// Send the data to PayPal for IPN processing
$ch = curl_init('https://www.paypal.com/cgi-bin/webscr');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// Process the response from PayPal
if ($response === 'VERIFIED') {
    // IPN processing successful
} else {
    // IPN processing failed
}

Keywords

PayPal IPN data sending key components processing.

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