ساخت درگاه ملت برای یک اسکریپت

سلام
میخوام برای یک اسکریپت درگاه آنلاین بانک ملت بسازم
نمونه کل ساخته شده برای پای پال رو گذاشتم
بگید هزینه چقدره

کد:

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<?php
/*
=====================================================
vldPersonals - by VLD Interactive
----------------------------------------------------
http://www.vldpersonals.com/
http://www.vldinteractive.com/
-----------------------------------------------------
Copyright (c) 2005-2011 VLD Interactive
=====================================================
THIS IS COPYRIGHTED SOFTWARE
PLEASE READ THE LICENSE AGREEMENT
http://www.vldpersonals.com/agreement/
=====================================================
*/


$data = array(
    'name' => 'PayPal',
    'label' => 'paypal',
    'settings' => array(
        array(
            'name' => 'Email address',
            'label' => 'paypal_email',
            'type' => 'email',
            'items' => array(),
            'value' => '',
            'help' => 'Type in your PayPal email address.',
        ),
        array(
            'name' => 'Currency',
            'label' => 'paypal_currency',
            'type' => 'select',
            'items' => array(
                'AUD' => '(AUD) Australian Dollar',
                'BRL' => '(BRL) Brazilian Real',
                'CAD' => '(CAD) Canadian Dollar',
                'CZK' => '(CZK) Czech Koruna',
                'DKK' => '(DKK) Danish Krone',
                'EUR' => '(EUR) Euro',
                'HKD' => '(HKD) Hong Kong Dollar',
                'HUF' => '(HUF) Hungarian Forint',
                'ILS' => '(ILS) Israeli New Sheqel',
                'JPY' => '(JPY) Japanese Yen',
                'MYR' => '(MYR) Malaysian Ringgit',
                'MXN' => '(MXN) Mexican Peso',
                'NOK' => '(NOK) Norwegian Krone',
                'NZD' => '(NZD) New Zealand Dollar',
                'PHP' => '(PHP) Philippine Peso',
                'PLN' => '(PLN) Polish Zloty',
                'GBP' => '(GBP) Pound Sterling',
                'SGD' => '(SGD) Singapore Dollar',
                'SEK' => '(SEK) Swedish Krona',
                'CHF' => '(CHF) Swiss Franc',
                'TWD' => '(TWD) Taiwan New Dollar',
                'THB' => '(THB) Thai Baht',
                'USD' => '(USD) U.S. Dollar',
            ),
            'value' => '',
            'help' => 'Select preferred currency.',
        ),
        array(
            'name' => 'Test mode',
            'label' => 'paypal_test',
            'type' => 'boolean',
            'items' => array(),
            'value' => '0',
            'help' => 'Enable if you want to run test transactions.',
        ),
    ),
);


//------------------------------------------------
// Payment form
//------------------------------------------------
function paypal_payment_form($package_id, $package_name, $package_amount, $package_group_id, $package_credits, $package_term_length, $package_term_type, $package_recurring, $member_gift_id = 0)
{
    global $DB, $PREFS, $SESSION, $LANG, $TEMPLATE;


    paypal_fetch_settings();


    $post_url = $PREFS->conf['gateways']['paypal']['paypal_test'] ? 'https://www.sandbox.paypal.com/cgi-bin/webscr' : 'https://www.paypal.com/cgi-bin/webscr';
    $notify_url = $PREFS->conf['fancy_urls'] ? 'account/upgrade/ipn/paypal/' : 'index.php?m=account_upgrade&p=ipn&id=paypal';
    $return_url = $PREFS->conf['fancy_urls'] ? 'account/upgrade/success/' : 'index.php?m=account_upgrade&p=success';
    $cancel_url = $PREFS->conf['fancy_urls'] ? 'account/upgrade/' : 'index.php?m=account_upgrade';


    if ( $package_term_type == 1 ) {
        $package_term_type = "D";
    }
    elseif ( $package_term_type == 2 ) {
        $package_term_type = "M";
    }
    elseif ( $package_term_type == 3 ) {
        $package_term_type = "Y";
    }


    if ( $package_recurring ) {
        $html = '
        <form name="paypal_payment_form" method="post" action="'.$post_url.'">
            <input type="image" src="'.VIR_PATH.'media/paypal_button.gif" name="submit" />
            <input type="hidden" name="cmd" value="_xclick-subscriptions" />
            <input type="hidden" name="src" value="1" />
            <input type="hidden" name="sra" value="1" />
            <input type="hidden" name="quantity" value="1" />
            <input type="hidden" name="no_note" value="1" />
            <input type="hidden" name="no_shipping" value="1" />
            <input type="hidden" name="rm" value="2" />
            <input type="hidden" name="charset" value="utf8" />
            <input type="hidden" name="p3" value="'.$package_term_length.'" />
            <input type="hidden" name="t3" value="'.$package_term_type.'" />
            <input type="hidden" name="business" value="'.$PREFS->conf['gateways']['paypal']['paypal_email'].'" />
            <input type="hidden" name="item_name" value="'.htmlentities2utf8($package_name).'" />
            <input type="hidden" name="item_number" value="'.$SESSION->conf['member_id'].'" />
            <input type="hidden" name="custom" value="'.$package_id.'" />
            <input type="hidden" name="a3" value="'.$package_amount.'" />
            <input type="hidden" name="currency_code" value="'.$PREFS->conf['gateways']['paypal']['paypal_currency'].'" />
            <input type="hidden" name="cancel_return" value="'.VIR_PATH.$cancel_url.'" />
            <input type="hidden" name="return" value="'.VIR_PATH.$return_url.'" />
            <input type="hidden" name="notify_url" value="'.VIR_PATH.$notify_url.'" />
        </form>';
    }
    else {
        $html = '
        <form name="paypal_payment_form" method="post" action="'.$post_url.'">
            <input type="image" src="'.VIR_PATH.'media/paypal_button.gif" name="submit" />
            <input type="hidden" name="cmd" value="_xclick" />
            <input type="hidden" name="quantity" value="1" />
            <input type="hidden" name="no_note" value="1" />
            <input type="hidden" name="no_shipping" value="1" />
            <input type="hidden" name="rm" value="2" />
            <input type="hidden" name="charset" value="utf8" />
            <input type="hidden" name="business" value="'.$PREFS->conf['gateways']['paypal']['paypal_email'].'" />
            <input type="hidden" name="item_name" value="'.htmlentities2utf8($package_name).'" />
            <input type="hidden" name="item_number" value="'.$SESSION->conf['member_id'].'" />
            <input type="hidden" name="custom" value="'.$package_id.($member_gift_id ? 'x'.$member_gift_id : '').'" />
            <input type="hidden" name="amount" value="'.$package_amount.'" />
            <input type="hidden" name="currency_code" value="'.$PREFS->conf['gateways']['paypal']['paypal_currency'].'" />
            <input type="hidden" name="cancel_return" value="'.VIR_PATH.$cancel_url.'" />
            <input type="hidden" name="return" value="'.VIR_PATH.$return_url.'" />
            <input type="hidden" name="notify_url" value="'.VIR_PATH.$notify_url.'" />
        </form>';
    }

    return $html;
}


//------------------------------------------------
// Process payment
//------------------------------------------------
function paypal_ipn()
{
    global $DB, $PREFS, $SESSION, $LANG, $TEMPLATE;


    if ( !count($_POST) ) return;
    paypal_fetch_settings();


    $success = 0;
    $postipn = 'cmd=_notify-validate';
    foreach ($_POST as $key => $value)
    {
        $value = urlencode(stripslashes($value));
        $postipn .= "&$key=$value";
    }


    $socket = @fsockopen(($PREFS->conf['gateways']['paypal']['paypal_test'] ? "www.sandbox.paypal.com" : "www.paypal.com"), 80, $errno, $errstr, 30);
    if ( !$socket ) return;


    $header = "POST /cgi-bin/webscr HTTP/1.0\r\n";
    $header.= "Host: " . ($PREFS->conf['gateways']['paypal']['paypal_test'] ? "www.sandbox.paypal.com" : "www.paypal.com") . "\r\n";
    $header.= "Content-Type: application/x-www-form-urlencoded\r\n";
    $header.= "Content-Length: ".strlen($postipn)."\r\n\r\n";


    @fputs($socket, $header.$postipn);
    while(!feof($socket))
    {
        $reply = @fgets($socket, 1024);
        $reply = @trim($reply);
    }

    @fclose ($socket);
    if ( strtolower($reply) != "verified" ) return;


    $member_id = isset($_POST['item_number']) ? intval($_POST['item_number']) : '';
    $txn_id = isset($_POST['txn_id']) ? mysql_real_escape_string($_POST['txn_id']) : '';
    $payment_amount = isset($_POST['mc_gross']) ? $_POST['mc_gross'] : '';
    $payment_currency = isset($_POST['mc_currency']) ? $_POST['mc_currency'] : '';

    $custom = isset($_POST['custom']) ? explode('x', $_POST['custom']) : '';
    $package_id = isset($custom[0]) ? intval($custom[0]) : 0;
    $member_gift_id = isset($custom[1]) ? mysql_real_escape_string($custom[1]) : 0;


    if ( strtolower($_POST['payment_status']) != "completed" || ( strtolower($_POST['txn_type']) != "subscr_payment" && strtolower($_POST['txn_type']) != "web_accept") ) return;
    if ( strtolower($_POST['receiver_email']) != strtolower($PREFS->conf['gateways']['paypal']['paypal_email']) && strtolower($_POST['business']) != strtolower($PREFS->conf['gateways']['paypal']['paypal_email']) ) return;


    $result = $DB->query("SELECT * FROM " . DB_PREFIX . "packages WHERE package_id='$package_id' LIMIT 1");
    if ( !$DB->num_rows($result) ) return;
    $obj = $DB->fetch_object($result);

    $package_price = $obj->price;
    $package_term = $obj->term;
    $package_type = $obj->termtype;
    $package_credits = $obj->credits;
    $new_group_id = $obj->group_id;


    $result = $DB->query("SELECT order_id FROM " . DB_PREFIX . "orders WHERE txn_id='paypal".$txn_id."' LIMIT 1");
    if ( $DB->num_rows($result) ) return;


    if ( $payment_amount != $package_price  ||  strtolower($payment_currency) != strtolower($PREFS->conf['gateways']['paypal']['paypal_currency']) ) return;


    $DB->query("INSERT INTO " . DB_PREFIX . "orders (member_id, member_gift_id, package_id, txn_id, paymentdate, amount, credits, term, termtype)
                VALUES('$member_id', '$member_gift_id', '$package_id', 'paypal".$txn_id."', '" . time() . "', '$package_price', '$package_credits', '$package_term', '$package_type')");

    set_membership_term($member_id, $member_gift_id, $new_group_id, $package_type, $package_term, $package_credits);
}


//------------------------------------------------
// Fetch settings
//------------------------------------------------
function paypal_fetch_settings()
{
    global $DB, $PREFS;

    $result = $DB->query("SELECT * FROM " . DB_PREFIX . "payment_gateways WHERE label='paypal' LIMIT 1");

    if ($DB->num_rows($result))
    {
        $obj = $DB->fetch_object($result);
        $PREFS->conf['gateways']['paypal'] = @unserialize($obj->settings);
    }
}


?>

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