<?php
function requestValidation()
{
    $original = $this->data["id"] . $this->data["subid"] .
        (100 * $this->data["amount"]) .  $this->data["currency"] .
        $this->data["utref"] .  $this->data["irrn"] .
        $this->ini->variable("PaynetSettings", "SecretWord");

    if (sha1($original) == $this->data["VERIFICATION"])
    {
        $this->log( 'The verification hash is correct' );
        return true;
    }

    $this->log( 'The verification hash is INCORRECT.' );
    return false;
}
?>



Secret word:
jcgQXRP5mI!VnwfUGzbrT8FyWt3x2o7YaEJ1pHi6AKN4qLOdCeDhBvslSku9Z#M