月度归档： 2021 年 12 月

PHP实现随机红包

    //随机红包(总份数、最大金额、最小金额、总数)
    protected function random_redpaper($total, $max, $min, $sum){
        $sum = $sum * 100;
        //按分单位，后面全部用整数金额

        $users = array_fill(0, $total, $min);
        $left = $sum - $min * $total;

        //将剩余金额按rand(1, ceil($left/$total))每次进行随机分配, $left 小于50直接分配完成
        for(;$left > 0;){
            $amount = $left > 50 ? rand(1, ceil($left/$total)) : $left;
            $user_index = rand(0, $total-1);
            if($users[$user_index] + $amount > $max){
                $amount = $max - $users[$user_index];
                $users[$user_index] = $max;
            }else{
                $users[$user_index] += $amount;
            }
            $left -= $amount;
        }

        //恢复按元单位
        foreach($users as &$user){
            $user = $user/100;
        }
        return $users;
    }

centos7 yum 安装 rabbitMQ

引用自https://www.rabbitmq.com/install-rpm.html

Install on Older Distributions (CentOS 7, RHEL 7) Using PackageCloud Yum Repository

添加sign

## primary RabbitMQ signing key
rpm --import https://github.com/rabbitmq/signing-keys/releases/download/2.0/rabbitmq-release-signing-key.asc
## modern Erlang repository
rpm --import https://packagecloud.io/rabbitmq/erlang/gpgkey
## RabbitMQ server repository
rpm --import https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey

添加repo

创建文件/etc/yum.repos.d/rabbitmq.repo

##
## Zero dependency Erlang
##

[rabbitmq_erlang]
name=rabbitmq_erlang
baseurl=https://packagecloud.io/rabbitmq/erlang/el/7/$basearch
repo_gpgcheck=1
gpgcheck=1
enabled=1
# PackageCloud's repository key and RabbitMQ package signing key
gpgkey=https://packagecloud.io/rabbitmq/erlang/gpgkey
       https://github.com/rabbitmq/signing-keys/releases/download/2.0/rabbitmq-release-signing-key.asc
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
metadata_expire=300

[rabbitmq_erlang-source]
name=rabbitmq_erlang-source
baseurl=https://packagecloud.io/rabbitmq/erlang/el/7/SRPMS
repo_gpgcheck=1
gpgcheck=0
enabled=1
gpgkey=https://packagecloud.io/rabbitmq/erlang/gpgkey
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
metadata_expire=300

##
## RabbitMQ server
##

[rabbitmq_server]
name=rabbitmq_server
baseurl=https://packagecloud.io/rabbitmq/rabbitmq-server/el/7/$basearch
repo_gpgcheck=1
gpgcheck=1
enabled=1
# PackageCloud's repository key and RabbitMQ package signing key
gpgkey=https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey
       https://github.com/rabbitmq/signing-keys/releases/download/2.0/rabbitmq-release-signing-key.asc
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
metadata_expire=300

[rabbitmq_server-source]
name=rabbitmq_server-source
baseurl=https://packagecloud.io/rabbitmq/rabbitmq-server/el/7/SRPMS
repo_gpgcheck=1
gpgcheck=0
enabled=1
gpgkey=https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
metadata_expire=300

更新yum

yum update -y

报错

Delta RPMs disabled because /usr/bin/applydeltarpm not installed

再安装deltarpm

yum install deltarpm
yum clean all
yum update -y

执行安装

yum install socat logrotate -y
yum install erlang rabbitmq-server -y