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检查/设置用户访问频率

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Jun 07, 2016 am 11:38 AM

检查/设置用户访问频率指定 user_marked在 time_slot 秒内最多访问 count次；
/** * 检查/设置用户访问频率指定 user_marked在 time_slot 秒内最多访问 count次； * @param $lime_slot 时间片单位秒 * @param $count 整数 * @param $user_marked 用户唯一标示，默认为客户端IP * @return array('status'=>1,'info'=>'') * @author leeyi <leeyisoft> */ function check_rate_limiting($time_slot, $count, $user_marked='') { $user_marked = empty($user_marked) ? get_client_ip() : $user_marked; $cache_key = 'rate.limiting:'.$user_marked; $redis = new \Redis; $options = array ( 'host' => C('REDIS_HOST') ? C('REDIS_HOST') : '127.0.0.1', 'port' => C('REDIS_PORT') ? C('REDIS_PORT') : 6379, 'timeout' => C('DATA_CACHE_TIMEOUT') ? C('DATA_CACHE_TIMEOUT') : false, ); $res = $redis->connect($options['host'], $options['port'], $options['timeout']); $ret = array('status'=>0, 'info'=>''); if( false===$res) { $ret['info'] = '链接Redis失败'; return $ret; } $redis->expire($cache_key, $time_slot); // 设置过期时间 $list_len = $redis->llen($cache_key); if( $list_len $redis->lpush($cache_key, NOW_TIME); $ret['status'] = 1; } else { $datetime = $redis->lindex($cache_key, -1); // -1 标示列表最后一个元素 if( (NOW_TIME-$datetime) $ret['info'] = '访问频率超过了限制，请稍后重试。'; // $redis->ltrim($cache_key, -1, 0); //清空列表 } else { $redis->lpush($cache_key, NOW_TIME); // $redis->ltrim($cache_key, 0, $count-1); $ret['status'] = 1; } } 1==$ret['status'] && $ret['info'] = $list_len+1; return $ret; }</leeyisoft>

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