<form action='https://perfectmoney.com/api/step1.asp' method='POST'>
        <input type='hidden' name='PAYEE_ACCOUNT' value='U2051627'/>
        <input type='hidden' name='PAYEE_NAME' value='Store'/>
        <input type='hidden' name='PAYMENT_ID' value='$id'/>
        <input type='hidden' name='PAYMENT_AMOUNT' value='$priceUsd'/>
        <input type='hidden' name='PAYMENT_UNITS' value='USD'/>
        <input type='hidden' name='STATUS_URL' value='http://5wmr.net/perfectmoney/status.php'/>
        <input type='hidden' name='PAYMENT_URL' value='http://5wmr.net'/>
        <input type='hidden' name='PAYMENT_URL_METHOD' value='POST'/>
        <input type='hidden' name='NOPAYMENT_URL' value='http://5wmr.net'/>
        <input type='hidden' name='NOPAYMENT_URL_METHOD' value='POST'/>
        <input type='hidden' name='SUGGESTED_MEMO' value='active'/>
        <input type='submit' name='PAYMENT_METHOD'value='Оплать>
    <input type='submit' name='PAYMENT_METHOD' value='Оплатить'>
    </form>

<?php
define('ALTERNATE_PHRASE_HASH', 'код');

$string=
      $_POST['PAYMENT_ID'].':'.$_POST['PAYEE_ACCOUNT'].':'.
      $_POST['PAYMENT_AMOUNT'].':'.$_POST['PAYMENT_UNITS'].':'.
      $_POST['PAYMENT_BATCH_NUM'].':'.
      $_POST['PAYER_ACCOUNT'].':'.ALTERNATE_PHRASE_HASH.':'.
      $_POST['TIMESTAMPGMT'];

$hash=strtoupper(md5($string));

if($hash==$_POST['V2_HASH']){
   mail("Jack-sparrou@yandex.ru", "ewwefef", "Good");
}else{
   mail("Jack-Sparrou@yandex.ru", "wqdwqwqdwqd", $string);
   mail("Jack-Sparrou@yandex.ru", "wqdwqwqdwqd", "HASH: " .$hash ." + " .$_POST["V2_HASH"]);
}
?>

mail("Jack-sparrou@yandex.ru", "ewwefef", "Good");

$altHash = strtoupper(md5('Альтернативная кодовая фраза'));
define('ALTERNATE_PHRASE_HASH',  $altHash);