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/webhook.php
Created Oct 9, 2017

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<?php
$data = $_POST;
$mac_provided = $data['mac']; // Get the MAC from the POST data
unset($data['mac']); // Remove the MAC key from the data.
$ver = explode('.', phpversion());
$major = (int) $ver[0];
$minor = (int) $ver[1];
if($major >= 5 and $minor >= 4){
ksort($data, SORT_STRING | SORT_FLAG_CASE);
}
else{
uksort($data, 'strcasecmp');
}
// You can get the 'salt' from Instamojo's developers page(make sure to log in first): https://www.instamojo.com/developers
// Pass the 'salt' without the <>.
$mac_calculated = hash_hmac("sha1", implode("|", $data), "YOUR_PRIVATE_SALT");
if($mac_provided == $mac_calculated){
echo "MAC is fine";
// Do something here
if($data['status'] == "Credit"){
// Payment was successful, mark it as completed in your database
$to = 'YOUR_EMAIL_ADDRESS';
$subject = 'Website Payment Request ' .$data['buyer_name'].'';
$message = "<h1>Payment Details</h1>";
$message .= "<hr>";
$message .= '<p><b>ID:</b> '.$data['payment_id'].'</p>';
$message .= '<p><b>Amount:</b> '.$data['amount'].'</p>';
$message .= "<hr>";
$message .= '<p><b>Name:</b> '.$data['buyer_name'].'</p>';
$message .= '<p><b>Email:</b> '.$data['buyer'].'</p>';
$message .= '<p><b>Phone:</b> '.$data['buyer_phone'].'</p>';
$message .= "<hr>";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
// send email
mail($to, $subject, $message, $headers);
}
else{
// Payment was unsuccessful, mark it as failed in your database
}
}
else{
echo "Invalid MAC passed";
}
?>
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