<?php

class ResourceLock
{
    private $lock_key = 'cxxxx:%s';

    private static $redis_instance;


    public function __construct()
    {
        self::$redis_instance = Redis::connection('lock');
    }

    private function getKey($resource_unique_name)
    {
        return str_replace('%s', $resource_unique_name, $this->lock_key);
    }

    /**
     * 检查资源锁
     * @param  string $resource_unique_name
     * @param int $lock_second 秒
     * @return array|bool
     */
    public function checkLock($resource_unique_name)
    {
        $lock_key = $this->getKey($resource_unique_name);
        $locked = self::$redis_instance->get($lock_key);
        if ($locked) {
            return false;
        }
        return true;
    }

    /**
     * 检查资源锁
     * @param  string $resource_unique_name
     * @param int $lock_second 秒
     * @return array|bool
     */
    public function setLock($resource_unique_name, $lock_second = 300)
    {
        $lock_key = $this->getKey($resource_unique_name);
        // 数据加锁
        self::$redis_instance->setex($lock_key, $lock_second, "1");
    }

    /**
     * 释放锁资源
     * @pastring $lock
     * @return bool
     */
    public function unlock($resource_unique_name)
    {
        $lockKey = $this->getKey($resource_unique_name);
        return self::$redis_instance->del($lockKey);
    }
}

$redis->expire($key, 60); //保持跟自然间隔时间相同 会自动延时60秒

<?php
echo str_replace("world","Shanghai","Hello world!");

Hello Shanghai!
?>