<?php
/*
** 通用函数helper
*/

//移除空参数
function remove_null_params($data = array()) {
	foreach ($data as $key => $value) {
		if ($value === NULL || $value === '') {
			unset($data[$key]);
		}
	}
	return $data;
}

// 通过pm2.5获取aqi的值
function get_aqi_and_level_by_pm25($pm25){
    if ($pm25 < 35) {  // 很好
        $aqi = 50 / 35 * $pm25;
    }elseif ($pm25 >= 35 && $pm25 < 75) {  // 好
        $aqi = 50 / 40 * ($pm25 - 35) + 50;
    }elseif ($pm25 >= 75 && $pm25 < 115) { // 一般
        $aqi = 50 / 40 * ($pm25 - 75) + 100;
    }elseif ($pm25 >= 115 && $pm25 < 150) { // 较差
        $aqi = 50 / 35 * ($pm25 - 115) + 150;
    }elseif ($pm25 >= 150 && $pm25 < 250) { // 差
        $aqi = 100 / 100 * ($pm25 - 150) + 200;
    }elseif ($pm25 >= 250 && $pm25 < 350) {  // 很差
        $aqi = 100 / 100 * ($pm25 - 250) + 300;
    }elseif ($pm25 >= 350) {  // 非常差
        $aqi = 100 / 150 * ($pm25 - 350) + 400;
    }

    $level = get_aqi_str($aqi);
    
    return array('aqi'=>round($aqi),'level'=>$level);
}

function get_aqi_str($aqi){
    if ($aqi < 50) {  // 很好
        $level = 'Very good';
    }elseif ($aqi >= 50 && $aqi < 100) {  // 好
        $level = 'Good';
    }elseif ($aqi >= 100 && $aqi < 150) { // 一般
        $level = 'Commonly';
    }elseif ($aqi >= 150 && $aqi < 200) { // 较差
        $level = 'Poor';
    }elseif ($aqi >= 200 && $aqi < 300) { // 差
        $level = 'Difference';
    }elseif ($aqi >= 300 && $aqi < 400) {  // 很差
        $level = 'Very bad';
    }elseif ($aqi >= 400) {  // 非常差
        $level = 'Very bad';
    }
    return $level;
}

// modbus crc 16 校验码计算
function crc16($string) {
  $crc = 0xFFFF;
  for ($x = 0; $x < strlen ($string); $x++) {
    $crc = $crc ^ ord($string[$x]);
    for ($y = 0; $y < 8; $y++) {
      if (($crc & 0x0001) == 0x0001) {
        $crc = (($crc >> 1) ^ 0xA001);
      } else { $crc = $crc >> 1; }
    }
  }
  $crc = strval(base_convert($crc, 10, 16));
  $crc = substr('0000'.$crc, -4);
  return substr($crc, -2).substr($crc, 0,2);
}

function crc_result($cmd){
    $begin = pack('H*',substr($cmd, 0,2));
    for ($i=0; $i < intval(strlen($cmd) / 2) - 1; $i++) { 
        $begin = $begin ^ pack('H*',substr($cmd, $i*2+2,2));
    }
    $begin = unpack('H*', $begin);
    return substr('00'.$begin[1], -2);
}

function mqttCmd($sendTopic,$backTopic,$sendData,$timeout = 5,$seq = ''){
    require_once './application/libraries/Mqtt.php';
    // 订阅信息,接收一个信息后退出
    $CI =& get_instance();
    $server = $CI->config->item('WIFIMqttServer');
    $port = $CI->config->item('WIFIMqttPort');
    $username = $CI->config->item('WIFIMqttUsername');
    $password = $CI->config->item('WIFIMqttPassword');

    $client_id = time().rand(100000,999999); // 设置你的连接客户端id

    $mqtt = new Mqtt($server, $port, $client_id);

    if($mqtt->connect(true, NULL, $username, $password)) { //链接不成功再重复执行监听连接
        $mqtt->publish($sendTopic, $sendData, 0);
        // $mqtt->publish('/WEGW/ReadIn/865860046894466', pack('H*','010AA00B'), 2);
    }else{
        return '';
    }

    $topics[$backTopic] = array("qos" => 0,"function" => "procmsg");
    // $topics['/WEGW/ReadOut/865860046894466'] = array("qos" => 2, "function" => "procmsg");
    // 订阅主题
    $mqtt->subscribe($topics, 0);
    $true = 1;
    $t = time();
    while($true == 1){
        $true = $mqtt->proc();
        if (!empty($seq) && $true != 1){
            $res = unpack('H*', $true['msg']);
            if (substr($res[1], 0,4) != strtolower($seq) && substr(substr($res[1], 0,4), -2).substr(substr($res[1], 0,4), 0,2) != strtolower($seq)) $true = 1;
        }
        if (time() - $t >= $timeout) {
            return '';
        }
    }
    $mqtt->close();
    return $true;
}

function get_seq(){
    $seq = rand(0,100000000);
    $seq = base_convert($seq, 10, 16);
    return substr('0000'.$seq, -4);
}

function get_check_sum($data){
    $sum = 0;
    for ($i=0; $i < strlen($data)/2; $i++) { 
        $sum += base_convert(substr($data, $i*2,2), 16, 10);
    }
    $sum = base_convert($sum, 10, 16);
    $sum = substr('00'.$sum, -2);
    return $sum;
}


// 设置时区
function set_timezone($date,$timezone){
    $time = strtotime($date) + $timezone*3600;
    return date('Y-m-d H:i:s',$time);
}
//小时数
function secToTime($times){
    $result = '00';
    if ($times>0) {
        $hour = floor($times/3600);
        $minute = floor(($times-3600 * $hour)/60);
        $second = floor((($times-3600 * $hour) - 60 * $minute) % 60);
        $result = $hour;
    }
    return $result;
}

// 发送邮件
function send_email($to,$msg,$title = '维修通知'){
    // $this->load->library('Smtp');
    require_once FCPATH.'application/libraries/Smtp.php';
    //******************** 配置信息 ********************************
    $CI =& get_instance();
    $config = $CI->config->config['email'];
    $smtpserver = $config['smtp_host'];//SMTP服务器
    $smtpserverport = $config['smtp_port'];//SMTP服务器端口
    $smtpusermail = $config['user_email'];//SMTP服务器的用户邮箱
    $smtpemailto = $to;//发送给谁
    $smtpuser = $config['smtp_user'];//SMTP服务器的用户帐号，注：部分邮箱只需@前面的用户名
    $smtppass = $config['smtp_pass'];//SMTP服务器的用户密码
    $mailtitle = $title;//邮件主题
    $mailcontent = $msg;//邮件内容
    $mailtype = "HTML";//邮件格式（HTML/TXT）,TXT为文本邮件
    //************************ 配置信息 ****************************
    $smtp = new Smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);//这里面的一个true是表示使用身份验证,否则不使用身份验证.
    $smtp->debug = false;//是否显示发送的调试信息
    return $smtp->sendmail($smtpemailto, $smtpusermail, $mailtitle, $mailcontent, $mailtype);
}

/**
  * 获取密码安全等级
  * @param string $password 密码
  * @return int 0:低,1:中,2:高
  */
function get_password_level($password){
    if(preg_match('/^([0-9]{6,16})$/',$password)){
    	return 0;
    } else if (preg_match('/^[0-9 a-z]{6,16}$/',$password)){
    	return 1;
    } else if (preg_match('/^[0-9 a-z A-Z !@#$%^&*]{6,16}$/',$password)) {
    	return 2;
    }
    return 0;
}

// 天气信息翻译
function weather_translate_en($code){
    $data = array(
        '100' => 'Sunny/Clear',
        '101' => 'Cloudy',
        '102' => 'Few Clouds',
        '103' => 'Partly Cloudy',
        '104' => 'Overcast',
        '200' => 'Windy',
        '201' => 'Calm',
        '202' => 'Light Breeze',
        '203' => 'Moderate/Gentle Breeze',
        '204' => 'Fresh Breeze',
        '205' => 'Strong Breeze',
        '206' => 'High Wind, Near Gale',
        '207' => 'Gale',
        '208' => 'Strong Gale',
        '209' => 'Storm',
        '210' => 'Violent Storm',
        '211' => 'Hurricane',
        '212' => 'Tornado',
        '213' => 'Tropical Storm',
        '300' => 'Shower Rain',
        '301' => 'Heavy Shower Rain',
        '302' => 'Thundershower',
        '303' => 'Heavy Thunderstorm',
        '304' => 'Thundershower with hail',
        '305' => 'Light Rain',
        '306' => 'Moderate Rain',
        '307' => 'Heavy Rain',
        '308' => 'Extreme Rain',
        '309' => 'Drizzle Rain',
        '310' => 'Storm',
        '311' => 'Heavy Storm',
        '312' => 'Severe Storm',
        '313' => 'Freezing Rain',
        '314' => 'Light to moderate rain',
        '315' => 'Moderate to heavy rain',
        '316' => 'Heavy rain to storm',
        '317' => 'Storm to heavy storm',
        '318' => 'Heavy to severe storm',
        '399' => 'Rain',
        '400' => 'Light Snow',
        '401' => 'Moderate Snow',
        '402' => 'Heavy Snow',
        '403' => 'Snowstorm',
        '404' => 'Sleet',
        '405' => 'Rain And Snow',
        '406' => 'Shower Snow',
        '407' => 'Snow Flurry',
        '408' => 'Light to moderate snow',
        '409' => 'Moderate to heavy snow',
        '410' => 'Heavy snow to snowstorm',
        '499' => 'Snow',
        '500' => 'Mist',
        '501' => 'Foggy',
        '502' => 'Haze',
        '503' => 'Sand',
        '504' => 'Dust',
        '507' => 'Duststorm',
        '508' => 'Sandstorm',
        '509' => 'Dense fog',
        '510' => 'Strong fog',
        '511' => 'Moderate haze',
        '512' => 'Heavy haze',
        '513' => 'Severe haze',
        '514' => 'Heavy fog',
        '515' => 'Extra heavy fog',
        '900' => 'Hot',
        '901' => 'Cold',
        '999' => 'Unknown',
    );
    return isset($data[$code]) ? $data[$code] : '';
}
function weather_translate_cn($code){
    $data = array(
        '100' => '晴',
        '101' => '多云',
        '102' => '少云',
        '103' => '晴间多云',
        '104' => '阴',
        '200' => '有风',
        '201' => '平静',
        '202' => '微风',
        '203' => '和风',
        '204' => '清风',
        '205' => '强风/劲风',
        '206' => '疾风',
        '207' => '大风',
        '208' => '烈风',
        '209' => '风暴',
        '210' => '狂爆风',
        '211' => '飓风',
        '212' => '龙卷风',
        '213' => '热带风暴',
        '300' => '阵雨',
        '301' => '强阵雨',
        '302' => '雷阵雨',
        '303' => '强雷阵雨',
        '304' => '雷阵雨伴有冰雹',
        '305' => '小雨',
        '306' => '中雨',
        '307' => '大雨',
        '308' => '极端降雨',
        '309' => '毛毛雨/细雨',
        '310' => '暴雨',
        '311' => '大暴雨',
        '312' => '特大暴雨',
        '313' => '冻雨',
        '314' => '小到中雨',
        '315' => '中到大雨',
        '316' => '大到暴雨',
        '317' => '暴雨到大暴雨',
        '318' => '大暴雨到特大暴雨',
        '399' => '雨',
        '400' => '小雪',
        '401' => '中雪',
        '402' => '大雪',
        '403' => '暴雪',
        '404' => '雨夹雪',
        '405' => '雨雪天气',
        '406' => '阵雨夹雪',
        '407' => '阵雪',
        '408' => '小到中雪',
        '409' => '中到大雪',
        '410' => '大到暴雪',
        '499' => '雪',
        '500' => '薄雾',
        '501' => '雾',
        '502' => '霾',
        '503' => '扬沙',
        '504' => '浮尘',
        '507' => '沙尘暴',
        '508' => '强沙尘暴',
        '509' => '浓雾',
        '510' => '强浓雾',
        '511' => '中度霾',
        '512' => '重度霾',
        '513' => '严重霾',
        '514' => '大雾',
        '515' => '特强浓雾',
        '900' => '热',
        '901' => '冷',
        '999' => '未知',
    );
    return isset($data[$code]) ? $data[$code] : '';
}
function weather_translate_ru($code){
    $data = array(
        '100' => 'чинг',
        '101' => 'облачно',
        '102' => 'Меньше облако',
        '103' => 'Ясная и облачная',
        '104' => 'инь',
        '200' => 'дует',
        '201' => 'спокойствие',
        '202' => 'ветерок',
        '203' => 'зефир',
        '204' => 'Свежий ветер',
        '205' => 'Сильный ветер/сильный ветер',
        '206' => 'шквал',
        '207' => 'ветер',
        '208' => 'шторм',
        '209' => 'шторм',
        '210' => 'Сильный ветер',
        '211' => 'ураган',
        '212' => 'Торнадо',
        '213' => 'Тропический шторм',
        '300' => 'ливень',
        '301' => 'Сильный душ',
        '302' => 'Грозовой дождь',
        '303' => 'Сильный грозовой дождь',
        '304' => 'Ливень сопровождается градом',
        '305' => 'дождик',
        '306' => 'Средний дождь',
        '307' => 'дождь',
        '308' => 'Экстремальный дождь',
        '309' => 'Дождик/мелкий дождь',
        '310' => 'Проливной дождь',
        '311' => 'Сильный дождь',
        '312' => 'Сильный ливень',
        '313' => 'Ледяной дождь',
        '314' => 'Немного дождя',
        '315' => 'Под дождём',
        '316' => 'Большой до грозы',
        '317' => 'От грозы до грозы',
        '318' => 'Сильные ливни, сильные ливни',
        '399' => 'дождь',
        '400' => 'Мелкий снежок',
        '401' => 'средний снег',
        '402' => 'снегопад',
        '403' => 'Снежная буря',
        '404' => 'Дождь и снег',
        '405' => 'Дождливая и снежная погода',
        '406' => 'Дождь и снег',
        '407' => 'снежный',
        '408' => 'Маленький до снега',
        '409' => 'Прямо в снег',
        '410' => 'От большой до снежной бури',
        '499' => 'снег',
        '500' => 'дымка',
        '501' => 'туман',
        '502' => 'мгла',
        '503' => 'янша',
        '504' => 'пыль',
        '507' => 'Песчаная буря',
        '508' => 'Сильная песчаная буря',
        '509' => 'Густой туман',
        '510' => 'Сильный густой туман',
        '511' => 'Умеренный туман',
        '512' => 'Тяжелая смола',
        '513' => 'Туман',
        '514' => 'Сильный туман',
        '515' => 'Густой туман',
        '900' => 'горячая',
        '901' => 'холодно',
        '999' => 'неизвестный',
    );
    return isset($data[$code]) ? $data[$code] : '';
}

//输出json
function json_result($code, $msg, $data = array()) {
    $res = array('code' => $code,'msg' => $msg,'data' => $data);
    $CI =& get_instance();
    $clientId = $CI->input->post('clientId',true);
    if (!empty($clientId)) {
        if (is_array($res['data']) && !isset($res['data']['status'])) {
            $res['data']['status'] = 2;
        }else{
            $res['data'] = array('status'=>2);
        }
        exit(send_websocket($clientId,$res));
    }else{
        echo json_encode($res);
    }
	
}

// 获取jwt的token值
function get_jwt_token(){
    $CI =& get_instance();
    $CI->load->library('Jwt');
    $payload=array("iss"=>"chirpstack-application-server","aud"=>"chirpstack-application-server","nbf"=>time()-60, "exp"=>time()+7200,'sub'=>'user','username'=>'admin');
    return $CI->jwt->getToken($payload);
}

//发送命令到server
function send_cmd($cmd, $timeout = 30, $ms_timeout = 200) {
	$CI =& get_instance();
	$host = $CI->config->item('cmd_server');
	$ip = $host['ip'];
	$port = $host['port'];
	$client = @stream_socket_client("tcp://{$ip}:{$port}", $errno, $errstr, 30);
	if ($client) {
		fwrite($client, $cmd);
		stream_set_timeout($client, $timeout, $ms_timeout);
		$result = fread($client, 8196);
		fclose($client);
		return $result;
	} else {
		return false;
	}
}

/**
* 模拟post进行url请求
* @param string $url
* @param string $param
*/
function http_post($url = '', $data = '',$header=array(),$timeout = 30) {
    $tuCurl = curl_init();
     //参数
    curl_setopt($tuCurl, CURLOPT_URL,$url);    
    curl_setopt($tuCurl, CURLOPT_POSTFIELDS, $data);
    curl_setopt($tuCurl, CURLOPT_SSL_VERIFYPEER, false);
    // curl_setopt($tuCurl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($tuCurl, CURLOPT_SSLVERSION, 1);
    curl_setopt($tuCurl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($tuCurl, CURLOPT_TIMEOUT, $timeout);
    if (!empty($header)) {
        curl_setopt($tuCurl, CURLOPT_HTTPHEADER, $header); 
    }
    $tuData = curl_exec($tuCurl);
    curl_close($tuCurl);

    return $tuData;
}


// 文件下载
function file_download($filePath){
    $file_name = basename($filePath);     //下载文件名    
    //检查文件是否存在    
    if (! file_exists ( $filePath )) {    

        exit (json_result('0012','找不到文件',array()));    
    } else {    
        //打开文件    
        $file = fopen ( $filePath, "r" );    
        //输入文件标签     
        Header ( "Content-type: application/octet-stream" );    
        Header ( "Accept-Ranges: bytes" );    
        Header ( "Accept-Length: " . filesize ( $filePath) );    
        Header ( "Content-Disposition: attachment; filename=" . $file_name );    
        //输出文件内容     
        //读取文件内容并直接输出到浏览器    
        echo fread ( $file, filesize ( $filePath ) );    
        fclose ( $file );    
        exit ();    
    }
}

/**
* 模拟get进行url请求
* @param string $url
*/
function http_get($url,$header = array()) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    if (!empty($header)) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header); 
    }
    // curl_setopt($ch, CURLOPT_TIMEOUT_MS, 1);
    $result = curl_exec($ch);
    curl_close($ch);

    return $result;
}

//截取字符串
function cut_str($string, $length, $append=true) {
	if(strlen($string) <= $length ) { 
		return $string; 
	} else { 
		$i = 0; 
		while ($i < $length) { 
			$stringTMP = substr($string,$i,1); 
			if ( ord($stringTMP) >=224 ) { 
				$stringTMP = substr($string,$i,3); 
				$i = $i + 3; 
			} elseif( ord($stringTMP) >=192 ) { 
				$stringTMP = substr($string,$i,2); 
				$i = $i + 2; 
			} else { 
				$i = $i + 1; 
			} 
			$stringLast[] = $stringTMP; 
		} 
		$stringLast = implode("",$stringLast); 
		if($append) { 
			$stringLast .= "..."; 
		} 
		return $stringLast; 
	}
}

//填充数组不存在的键值对
function fillUnsetData($array, $length) {
	for ($i=1; $i <= $length; $i++) { 
		if (!isset($array[$i])) {
			$array[$i] = '';
		} 
	}
	return $array;
}

//查找数组第一个元素的key
function findFirstKey($array) {
	foreach ($array as $k => $v){
		return $k;
	}
}

function doAsyncRequest($url, $param=array()){  
    $urlinfo = parse_url($url);  
    $host = $urlinfo['host'];  
    $path = $urlinfo['path'];  
    $query = isset($param)? http_build_query($param) : '';  
    $port = 80;  
    $errno = 0;  
    $errstr = '';  
    $timeout = 10;  
    $fp = fsockopen($host, $port, $errno, $errstr, $timeout);  
    $out = "POST ".$path." HTTP/1.1\r\n";  
    $out .= "host:".$host."\r\n";  
    $out .= "content-length:".strlen($query)."\r\n";  
    $out .= "content-type:application/x-www-form-urlencoded\r\n";  
    $out .= "connection:close\r\n\r\n";  
    $out .= $query;  
    fputs($fp, $out);  
    fclose($fp);  
}

function send_websocket($clientid,$data = array(),$resType='cmd')
{
    if (!empty($clientid)) {
        $CI =& get_instance();
        $CI->db->insert('message',['client'=>$clientid,'msg'=>json_encode($data),'type'=>'cmd']);
    }
    
}

//token生成算法
function generate_token($username, $password, $client_key) {
	$CI =& get_instance();
	$salt = $CI->config->config['encryption_key'];
    return md5($username.$password.$client_key.$salt);
	// return md5($username.$password.date('yyyy').date('mm').$client_key.$salt);
}

//获取汉字拼音的第一个字母
function get_first_char($str) {
    $firstchar_ord = ord(strtoupper($str{0}));
    if (($firstchar_ord >= 65 and $firstchar_ord <= 91) or ($firstchar_ord >= 48 and $firstchar_ord <= 57)) return $str{0};
    $s = iconv("UTF-8", "GBK//TRANSLIT//IGNORE", $str);
    $asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
    if ($asc >= - 20319 and $asc <= - 20284) return "A";
    if ($asc >= - 20283 and $asc <= - 19776) return "B";
    if ($asc >= - 19775 and $asc <= - 19219) return "C";
    if ($asc >= - 19218 and $asc <= - 18711) return "D";
    if ($asc >= - 18710 and $asc <= - 18527) return "E";
    if ($asc >= - 18526 and $asc <= - 18240) return "F";
    if ($asc >= - 18239 and $asc <= - 17923) return "G";
    if ($asc >= - 17922 and $asc <= - 17418) return "H";
    if ($asc >= - 17417 and $asc <= - 16475) return "J";
    if ($asc >= - 16474 and $asc <= - 16213) return "K";
    if ($asc >= - 16212 and $asc <= - 15641) return "L";
    if ($asc >= - 15640 and $asc <= - 15166) return "M";
    if ($asc >= - 15165 and $asc <= - 14923) return "N";
    if ($asc >= - 14922 and $asc <= - 14915) return "O";
    if ($asc >= - 14914 and $asc <= - 14631) return "P";
    if ($asc >= - 14630 and $asc <= - 14150) return "Q";
    if ($asc >= - 14149 and $asc <= - 14091) return "R";
    if ($asc >= - 14090 and $asc <= - 13319) return "S";
    if ($asc >= - 13318 and $asc <= - 12839) return "T";
    if ($asc >= - 12838 and $asc <= - 12557) return "W";
    if ($asc >= - 12556 and $asc <= - 11848) return "X";
    if ($asc >= - 11847 and $asc <= - 11056) return "Y";
    if ($asc >= - 11055 and $asc <= - 10247) return "Z";
    return '~';
}

//翻译错误
function transfer_error_tips($msg) {
    if(strpos($msg,'project not existed') !== false) {
        return '项目不存在';
    } else if(strpos($msg,'all of networks in this project are not online') !== false) {
        return '当前项目下所有网络都不在线';
    } else if(strpos($msg,'error check_code') !== false) {
        return '路灯发生未知错误';
    } else if(strpos($msg,'cmd not existed') !== false) {
        return '未知命令';
    } else if(strpos($msg,'address not correct') !== false) {
        return '无线模块地址不正确';
    } else if(strpos($msg,'current address not online') !== false) {
        return '无线模块不在线';
    } else if(strpos($msg,'time out no response') !== false) {
        return '超时未响应';
    } else if(strpos($msg,'PDU error') !== false) {
        return 'PDU错误';
    } else if(strpos($msg,'not online') !== false) {
        return '网络不在线';
    } else if(strpos($msg,'send command timeout') !== false) {
        return '下发指令超时';
    } else if(strpos($msg,'The file you are attempting to upload is larger than the permitted size.') !== false) {
        return '上传文件过大';
    } else if(strpos($msg,'The filetype you are attempting to upload is not allowed.') !== false) {
        return '上传文件类型错误';
    }else if($msg == '') {
        return '未知错误';
    } else {
        return '未知错误';
    }
}

//俄语翻译错误
function transfer_error_tips_ru($msg) {
    if(strpos($msg,'project not existed') !== false) {
        return 'Проект не существует';
    } else if(strpos($msg,'all of networks in this project are not online') !== false) {
        return 'Все сети в рамках текущего проекта не подключены';
    } else if(strpos($msg,'error check_code') !== false) {
        return 'Неизвестная ошибка уличных фонарей';
    } else if(strpos($msg,'cmd not existed') !== false) {
        return 'Неизвестная команда';
    } else if(strpos($msg,'address not correct') !== false) {
        return 'Неверный адрес модуля';
    } else if(strpos($msg,'current address not online') !== false) {
        return 'беспроводной модуль не подключен';
    } else if(strpos($msg,'time out no response') !== false) {
        return 'задержка без ответа';
    } else if(strpos($msg,'PDU error') !== false) {
        return 'ошибка PDU';
    } else if(strpos($msg,'not online') !== false) {
        return 'сеть не работает';
    } else if(strpos($msg,'send command timeout') !== false) {
        return 'время ожидания следующей команды';
    } else if(strpos($msg,'The file you are attempting to upload is larger than the permitted size.') !== false) {
        return 'загружать слишком большой файл';
    } else if(strpos($msg,'The filetype you are attempting to upload is not allowed.') !== false) {
        return 'Ошибка загрузки типа файла';
    }else if($msg == '') {
        return 'Неизвестная ошибка';
    } else {
        return 'Неизвестная ошибка';
    }
}

/**
 * 把返回的数据集转换成Tree
 * @param array $list 要转换的数据集
 * @param string $pid parent标记字段
 * @param string $level level标记字段
 * @return array
 * @author 麦当苗儿 <zuojiazi@vip.qq.com>
 */
function list_to_tree($list, $pk='id', $pid = 'pid', $child = '_child', $root = 0) {

    // 创建Tree
    $tree = array();
    if(is_array($list)) {
        // 创建基于主键的数组引用
        $refer = array();
        foreach ($list as $key => $data) {
            $refer[$data[$pk]] =& $list[$key];
        }
        foreach ($list as $key => $data) {
            // 判断是否存在parent
            $parentId =  $data[$pid];
            if ($root == $parentId) {
                $tree[] =& $list[$key];
            }else{
                if (isset($refer[$parentId])) {
                    $parent =& $refer[$parentId];
                    $parent[$child][] =& $list[$key];
                }
            }
        }
    }
    return $tree;
}


function getTree($data, $pId)
{
    $tree = [];
    foreach($data as $k => $v)
    {
        if($v['pid'] == $pId)
        {
            $v['subList'] = getTree($data, $v['id']);
            $tree[] = $v;
            unset($data[$k]);
        }
    }
    return $tree;
}


// 编号设置
function set_number($n){
    $n = intval($n);
    $res = $n + 1000000;
    return substr($res, 1);
}


?>