1、View UI Plus
https://iviewui.com/

2、Navie UI
https://www.naiveui.com/zh-CN/os-theme

3、Element Plus
https://element-plus.gitee.io/zh-CN/

4、Layui
https://layui.gitee.io/v2/

5、Bootstrap
https://www.bootcss.com/

还有一些没考虑到的，望见谅！

1、数组指针：首先是一个指针，一个数组的地址。

记：*[4]Type

2、指针数组：首先是一个数组，存储的数据类型是指针。

记：[4]*Type

3、函数指针：首先是一个指针，指向了一个函数的指针。

记：

var a func()
a = fun1
a()

4、指针函数：首先是一个函数，该函数返回值是一个指针。

linux平台：

CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build main.go

windows平台下.exe：

CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build main.go

 /**
 * 检查登录频率限制
 *
 * @param $username
 * @return void
 * @throws BusinessException
 */
protected function checkLoginLimit($username)
{
    $username = 'liziyu';
    $limit_log_path = runtime_path() . '/login';
    if (!is_dir($limit_log_path)) {
        mkdir($limit_log_path, 0777, true);
    }
    $limit_file = $limit_log_path . '/' . md5($username) . '.limit';
    $time = date('YmdH') . ceil(date('i')/5);
    $limit_info = [];
    if (is_file($limit_file)) {
        $json_str = file_get_contents($limit_file);
        $limit_info = json_decode($json_str, true);
    }

    if (!$limit_info || $limit_info['time'] != $time) {
        $limit_info = [
            'username' => $username,
            'count' => 0,
            'time' => $time
        ];
    }
    $limit_info['count']++;
    file_put_contents($limit_file, json_encode($limit_info));
    if ($limit_info['count'] >= 5) {
        throw new BusinessException('登录失败次数过多，请5分钟后再试');
    }
}

转自：https://github.com/webman-php/admin/blob/main/src/plugin/admin/app/controller/common/AccountController.php

<?php
/**
 * MineAdmin is committed to providing solutions for quickly building web applications
 * Please view the LICENSE file that was distributed with this source code,
 * For the full copyright and license information.
 * Thank you very much for using MineAdmin.
 *
 * @Author X.Mo<root@imoi.cn>
 * @Link   https://gitee.com/xmo/MineAdmin
 */

namespace Mine\Redis;

use Hyperf\Utils\Coroutine;
use Mine\Abstracts\AbstractRedis;
use Mine\Exception\NormalStatusException;
use Mine\Interfaces\MineRedisInterface;

class MineLockRedis extends AbstractRedis implements MineRedisInterface
{
    /**
     * 设置 key 类型名
     * @param string $typeName
     */
    public function setTypeName(string $typeName): void
    {
        $this->typeName = $typeName;
    }

    /**
     * 获取key 类型名
     * @return string
     */
    public function getTypeName(): string
    {
        return $this->typeName;
    }

    /**
     * 运行锁，简单封装
     * @param \Closure $closure
     * @param string $key
     * @param int $expired
     * @param int $timeout
     * @param float $sleep
     * @return bool
     * @throws \Throwable
     */
    public function run(\Closure $closure, string $key, int $expired, int $timeout = 0, float $sleep = 0.1): bool
    {
        if (! $this->lock($key, $expired, $timeout, $sleep)) {
            return false;
        }

        try {
            call_user_func($closure);
        } catch (\Throwable $e) {
            logger('Redis Lock')->error(t('mineadmin.redis_lock_error'));
            throw new NormalStatusException(t('mineadmin.redis_lock_error'), 500);
        } finally {
            $this->freed($key);
        }

        return true;
    }

    /**
     * 检查锁
     * @param string $key
     * @return bool
     * @throws \Psr\Container\ContainerExceptionInterface
     * @throws \Psr\Container\NotFoundExceptionInterface
     */
    public function check(string $key): bool
    {
        return redis()->exists($this->getKey($key));
    }

    /**
     * 添加锁
     * @param string $key
     * @param int $expired
     * @param int $timeout
     * @param float $sleep
     * @return bool
     * @throws \Psr\Container\ContainerExceptionInterface
     * @throws \Psr\Container\NotFoundExceptionInterface
     */
    public function lock(string $key, int $expired, int $timeout = 0, float $sleep = 0.1): bool
    {
        $retry = $timeout > 0 ? intdiv($timeout * 100, 10) : 1;

        $name = $this->getKey($key);

        while ($retry > 0) {

            $lock = redis()->set($name, 1, ['nx', 'ex' => $expired]);
            if ($lock || $timeout === 0) {
                break;
            }
            Coroutine::id() ? Coroutine::sleep($sleep) : usleep(9999999);

            $retry--;
        }

        return true;
    }

    /**
     * 释放锁
     * @param string $key
     * @return bool
     * @throws \Psr\Container\ContainerExceptionInterface
     * @throws \Psr\Container\NotFoundExceptionInterface
     */
    public function freed(string $key): bool
    {
        $luaScript = <<<Lua
            if redis.call("GET", KEYS[1]) == ARGV[1] then
                return redis.call("DEL", KEYS[1])
            else
                return 0
            end
        Lua;

        return redis()->eval($luaScript, [$this->getKey($key), 1], 1) > 0;
    }

}

获取系统的高精度时间，还是有点点限制的！

hrtime(true);

如下：

128817029472663
128817029474711
128817029476773
128817029478813
128817029480874

https://www.php.net/manual/zh/function.hrtime.php

1、第一步

$ which php
$ vim ~/.bash_profile

2、第二步

$ export PATH=/Applications/MAMP/bin/php/php7.2.7/bin:$PATH
$ #/Applications/MAMP/bin/php/php7.2.7/bin是我的php版本路径

3、第三步

$ source ~/.bash_profile

4、第四步

$ php -v

如果以上步骤仍然没有改变PHP的版本，再执行以下：

1、vim ~/.zshrc
2、source~/.bash_profile