Robokassa.class.php

<?php
class Robokassa
{
    /**
     * @var string
     */
    protected $MerchLogin = "";
    /**
     * @var array
     */
    protected $Passwords = array();
    /**
     * @var mixed
     */
    protected $Testing = false;
    /**
     * @var mixed
     */
    protected $Debug = true;
    /**
     * @var array
     */
    protected $SHP_params = array();
    /**
     * @param $params
     */
    public function __construct($params)
    {
        if (is_array($params)) {
            if (!empty($params[0])) {
                $this->MerchLogin = $params[0];
            }

            if (is_array($params[1])) {
                $this->Passwords = $params[1];
            }

            if (isset($params['test'])) {
                $this->Testing = (bool) $params['test'];
            } else {
                $this->Testing = (bool) $params[2];
            }

            if (isset($params['debug'])) {
                $this->Debug = (bool) $params['debug'];
            }

        }
    }
    /**
     * @param $sum
     * @param $invid
     * @param array $params
     * @param $check
     * @param false $forcepass
     */
    public function genSig($sum, $invid = '0', $params = array(), $check = false, $forcepass = -1)
    {
        $pwdkey = 0;
        if ($check) {
            if ($forcepass == -1) {
                if ($this->Testing) {
                    $pwdkey = 3;
                } else {
                    $pwdkey = 1;
                }
            } else {
                $pwdkey = $forcepass;
            }

            $sig = $sum . ":" . $invid . ":" . $this->Passwords[$pwdkey];
        } else {
            if ($forcepass == -1) {
                if ($this->Testing) {
                    $pwdkey = 2;
                } else {
                    $pwdkey = 0;
                }
            } else {
                $pwdkey = $forcepass;
            }

            $sig = $this->MerchLogin . ":" . $sum . ":" . $invid . ":" . $this->Passwords[$pwdkey];
        }
        if (!empty($params)) {
            foreach ($params as $key => $value) {
                $sig .= ":shp_" . $key . "=" . $value;
            }
        }

        if ($this->Debug) {
            if ($check) {
                $this->debug($sig . " = " . md5(trim($sig)), 'CHECK_SIGN');
            } else {
                $this->debug($sig . " = " . md5(trim($sig)), 'FIRST_CLEAR_SIGNATURE');
            }
        }

        return md5(trim($sig));
    }
    /**
     * @param array $data
     * @param $name
     */
    public function debug($data = array(), $name = '')
    {
        file_put_contents('debug' . date('dmY') . '.log', date('[H:i:s] ') . $name . "\r\nRESULT:::\r\n" . print_r($data, true) . "\r\n=====\r\n", FILE_APPEND);
    }
    /**
     * @param $sum
     * @param $desc
     * @param $invid
     * @param array $params
     * @param $IncCurrLabel
     */
    public function doRedirect($sum = 100, $desc = '', $invid = '0', $params = array(), $IncCurrLabel = 'ru')
    {
        header("X-Redirect: Powered by neatek");
        header("Location: " . $this->getPayment($sum, $desc, $invid, $params, $IncCurrLabel));
    }
    /**
     * @param $sum
     * @param $desc
     * @param $invid
     * @param array $params
     * @param $IncCurrLabel
     * @return mixed
     */
    public function getPayment($sum = 100, $desc = '', $invid = '0', $params = array(), $IncCurrLabel = 'ru')
    {
        $email = "";if (isset($params['email'])) {
            $email = $params['email'];
        }

        $signature    = $this->genSig($sum, $invid, $params);
        $redirect_url = "http://auth.robokassa.ru/Merchant/Index.aspx?MrchLogin=" . $this->MerchLogin . "&OutSum=" . $sum . "&InvId=" . $invid . "&IncCurrLabel=" . $IncCurrLabel . "&InvDesc=" . urlencode($desc) . "&Desc=" . urlencode($desc) . "&Encoding=UTF-8&Email=" . $email . "&SignatureValue=" . $signature;
        if ($this->Testing) {
            $redirect_url .= "&isTest=1";
        }

        if (!empty($params)) {
            foreach ($params as $key => $value) {
                $redirect_url .= "&shp_" . $key . "=" . urlencode($value);
            }
        }

        if ($this->Debug) {
            $this->debug('PAYMENT_URL: ' . $redirect_url . "\r\n");
        }

        return $redirect_url;
    }
    /**
     * @param array $request
     * @return mixed
     */
    public function get_shp_params_request($request = array())
    {
        if (empty($request)) {
            $request = $_REQUEST;
        }

        $params = array();
        if (!empty($request)) {
            foreach ($request as $key => $value) {
                if (strpos($key, 'shp_') !== false) {
                    $x          = str_replace('shp_', '', $key);
                    $params[$x] = $value;
                }
            }
        }
        if ($this->Debug) {
            $this->debug('WE_GOT_REQUEST_SHP_PARAMS: ' . print_r($params, true));
        }

        return $params;
    }
    /**
     * @return mixed
     */
    public function get_shp_params()
    {
        return $this->SHP_params;
    }
    public function compareCRC()
    {
        if (isset($_REQUEST["OutSum"]) && isset($_REQUEST["InvId"]) && isset($_REQUEST["SignatureValue"])) {
            $invid      = (string) $_REQUEST['InvId'];
            $crc        = strtoupper($_REQUEST["SignatureValue"]);
            $shp_params = $this->get_shp_params_request();
            for ($x = 0; $x <= 3; $x++) {
                $gensign = strtoupper($this->genSig($_REQUEST["OutSum"], $invid, $shp_params, true, $x));
                if ($this->Debug) {
                    $this->debug('COMPARE_CRC: ' . $gensign . ' ?= ' . $crc);
                }

                if (strcmp($gensign, $crc) == 0) {
                    $this->SHP_params = $shp_params;
                    return true;
                }
            }
        }
        return false;
    }
    public function isSuccess()
    {
        if ($this->compareCRC()) {
            return true;
        }

        return false;
    }
}