noride/noridecrm/service/common/pay/threexmta/PayUtils.php

<?php
namespace common\pay\threexmta;

/**
 * Class ThreexmtaCommon
 * @package common\pay\handler\threexmta
 */
class PayUtils
{
    /**
     * 签名生成
     * @param array $params 
     * @param string $secretKey
     * @return string
     */
    public static function makeSign($params, $secretKey)
    {
        $str = '';
        $fields = ['orderNo', 'appType', 'orderAmount', 'succ', 'encodeType'];
        foreach ($fields as $field) {
            if ($field == 'succ' && !isset($params[$field])) {
                continue;
            }
            $str .= $field . $params[$field];
        }
        $str .= $secretKey;
        $signMD5 = strtolower(md5($str));
        return $signMD5;
    }
}