php generates five-digit invitation code-PHP Tutorial-php.cn

php generates five-digit invitation code

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Release： 2023-03-23 17:48:02

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The content shared with you in this article is the five-digit invitation code generated by php, which has a certain reference value. Friends in need can refer to it

model

 /**
     * 生成邀请码
     * @param $uid
     * @return string
     */
	public function initcode() {
        $code = &#39;ABCDEFGHIJKLMNOPQRSTUVWXYZ&#39;;
        $rand = $code[rand(0,25)]
            .strtoupper(dechex(date(&#39;m&#39;)))
            .date(&#39;d&#39;).substr(time(),-5)
            .substr(microtime(),2,5)
            .sprintf(&#39;%02d&#39;,rand(0,99));
        for(
            $a = md5( $rand, true ),
            $s = &#39;0123456789ABCDEFGHIJKLMNOPQRSTUV&#39;,
            $d = &#39;&#39;,
            $f = 0;
            $f < 5;
            $g = ord( $a[ $f ] ),
            $d .= $s[ ( $g ^ ord( $a[ $f + 8 ] ) ) - $g & 0x1F ],
            $f++
        );
        return $d;
    }

    /**
     * 是否重复
     */
    public function recode($code) {
        if ($this->where(&#39;code=&#39;.$code)->find()) {
            return false;
        }
        return true;
    }

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action

/**
     * 我的邀请码
     * @author zhangfeng
     */
    public function mycode() {
        $model = M(&#39;Usercode&#39;);
        $uid = ($_GET[&#39;uid&#39;]);
        $code = $model->is_code($uid);
        $this->assign(&#39;code&#39;, $code);
        if (!$code) {
            $code = $this->getcode($model, $uid);
            $res = $model->savecode($uid, $code);
            if ($res) {
                $this->assign(&#39;code&#39;, $code);
            } else {
                $this->assign(&#39;code&#39;, &#39;邀请码生成失败！，错误：&#39;.$model->getError());
            }
        }
        $this->display();
    }

    /**
     * 递归函数获取绝对不重复邀请码
     * @author zhangfeng
     * @param $model
     * @param $uid
     * @return mixed
     */
    private function getcode($model, $uid) {
        $code = $model->initcode($uid);
        if ($model->recode($code)) {
            return $code;
        } else {
            while(true) {
                $this->getcode($model, $uid);
            }
        }
    }

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