general_channel/src/Helpers/CommonHelper.php

<?php

namespace General\Helpers;

/**
 * 一般 工具类
 */
class CommonHelper
{
    /**
     * 签名生成
     */
    public static function sign($params, $key)
    {
        $signPars = "";
        ksort($params);
        foreach ($params as $k => $v) {
            if ($v !== "" && $v !== null && $k !== "sign") {
                $signPars .= $k . "=" . $v . "&";
            }
        }
        $signPars .= "key=" . $key;
        return md5($signPars);
    }
}