nk-lihaink-cn/app/common.php

<?php
// 应用公共文件
use think\facade\Cache;
use think\facade\Config;
use think\facade\Db;
use think\facade\Request;

//设置缓存
function set_cache($key, $value, $date = 86400)
{
    Cache::set($key, $value, $date);
}

//读取缓存
function get_cache($key)
{
   return Cache::get($key);
}

//清空缓存
function clear_cache($key)
{
    Cache::clear($key);
}


//读取文件配置
function get_config($key)
{
    return Config::get($key);
}

//读取系统配置
function get_system_config($name,$key)
{
    $config=[];
    if (get_cache('system_config' . $name)) {
        $config = get_cache('system_config' . $name);
    } else {
        $conf = Db::name('config')->where('name',$name)->find();
        if($conf['content']){
            $config = unserialize($conf['content']);
        }
        set_cache('system_config' . $name, $config);
    }
    if($config[$key]){
        return $config[$key];
    }    
}

//系统信息
function get_system_info($key)
{
    $system = [
        'os' => PHP_OS,
        'php' => PHP_VERSION,
        'upload_max_filesize' => get_cfg_var("upload_max_filesize") ? get_cfg_var("upload_max_filesize") : "不允许上传附件",
        'max_execution_time' => get_cfg_var("max_execution_time") . "秒 ",
    ];
    if (empty($key)) {
        return $system;
    } else {
        return $system[$key];
    }
}

//获取url参数
function get_params($key = "")
{
    return Request::instance()->param($key);
}

//生成一个不会重复的字符串
function make_token()
{
    $str = md5(uniqid(md5(microtime(true)), true));
    $str = sha1($str); //加密
    return $str;
}

//随机字符串，默认长度10
function set_salt($num = 10)
{
    $str = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890';
    $salt = substr(str_shuffle($str), 10, $num);
    return $salt;
}
//密码加密
function set_password($pwd, $salt)
{
    return md5(md5($pwd . $salt) . $salt);
}

//判断cms是否完成安装
function is_installed()
{
    static $isInstalled;
    if (empty($isInstalled)) {
        $isInstalled = file_exists(CMS_ROOT . 'config/install.lock');
    }
    return $isInstalled;
}

/**
 * 返回json数据，用于接口
 * @param    integer    $code
 * @param    string     $msg
 * @param    array      $data
 * @param    string     $url
 * @param    integer    $httpCode
 * @param    array      $header
 * @param    array      $options
 * @return   json
 */
function to_assign($code = 1, $msg = "操作成功", $data = [], $url = '', $httpCode = 200, $header = [], $options = [])
{
    $res = ['code' => $code];
    $res['msg'] = $msg;
    $res['url'] = $url;
    if (is_object($data)) {
        $data = $data->toArray();
    }
    $res['data'] = $data;
    $response = \think\Response::create($res, "json", $httpCode, $header, $options);
    throw new \think\exception\HttpResponseException($response);
}

/**
 * 适配layui数据列表的返回数据方法，用于接口
 * @param    integer    $code
 * @param    string     $msg
 * @param    array      $data
 * @param    integer    $httpCode
 * @param    array      $header
 * @param    array      $options
 * @return   json
 */
function table_assign($code = 0, $msg = '请求成功', $data = [], $httpCode = 200, $header = [], $options = [])
{
    $res['code'] = $code;
    $res['msg'] = $msg;
    if (is_object($data)) {
        $data = $data->toArray();
    }
    if (!empty($data['total'])) {
        $res['count'] = $data['total'];
    } else {
        $res['count'] = 0;
    }
    $res['data'] = $data['data'];
    $response = \think\Response::create($res, "json", $httpCode, $header, $options);
    throw new \think\exception\HttpResponseException($response);
}

/**
 * 间隔时间段格式化
 * @param int $time 时间戳
 * @param string $format 格式 【d：显示到天 i显示到分钟 s显示到秒】
 * @return string
 */
function time_trans($time, $format = 'd')
{
    $now = time();
    $diff = $now - $time;
    if ($diff < 60) {
        return '1分钟前';
    } else if ($diff < 3600) {
        return floor($diff / 60) . '分钟前';
    } else if ($diff < 86400) {
        return floor($diff / 3600) . '小时前';
    }
    $yes_start_time = strtotime(date('Y-m-d 00:00:00', strtotime('-1 days'))); //昨天开始时间
    $yes_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-1 days'))); //昨天结束时间
    $two_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-2 days'))); //2天前结束时间
    $three_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-3 days'))); //3天前结束时间
    $four_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-4 days'))); //4天前结束时间
    $five_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-5 days'))); //5天前结束时间
    $six_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-6 days'))); //6天前结束时间
    $seven_end_time = strtotime(date('Y-m-d 23:59:59', strtotime('-7 days'))); //7天前结束时间

    if ($time > $yes_start_time && $time < $yes_end_time) {
        return '昨天';
    }

    if ($time > $yes_start_time && $time < $two_end_time) {
        return '1天前';
    }

    if ($time > $yes_start_time && $time < $three_end_time) {
        return '2天前';
    }

    if ($time > $yes_start_time && $time < $four_end_time) {
        return '3天前';
    }

    if ($time > $yes_start_time && $time < $five_end_time) {
        return '4天前';
    }

    if ($time > $yes_start_time && $time < $six_end_time) {
        return '5天前';
    }

    if ($time > $yes_start_time && $time < $seven_end_time) {
        return '6天前';
    }

    switch ($format) {
        case 'd':
            $show_time = date('Y-m-d', $time);
            break;
        case 'i':
            $show_time = date('Y-m-d H:i', $time);
            break;
        case 's':
            $show_time = date('Y-m-d H:i:s', $time);
            break;
    }
    return $show_time;
}

/**
 * 根据附件表的id返回url地址
 * @param  [type] $id [description]
 */
function get_file($id)
{
    if ($id) {
        $geturl = \think\facade\Db::name("file")->where(['id' => $id])->find();
        if ($geturl['status'] == 1) {
            //审核通过
            //获取签名的URL
            $url = $geturl['filepath'];
            return $url;
        } elseif ($geturl['status'] == 0) {
            //待审核
            return '/static/admin/images/none_pic.jpg';
        } else {
            //不通过
            return '/static/admin/images/none_pic.jpg';
        }
    }
    return false;
}


/**
 * 判断是否是手机浏览器
 */
function isMobile()
{ 
    if (isset($_SERVER['HTTP_VIA']) && stristr($_SERVER['HTTP_VIA'], "wap")) {
        return true;
    } elseif (isset($_SERVER['HTTP_ACCEPT']) && strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML")) {
        return true;
    } elseif (isset($_SERVER['HTTP_X_WAP_PROFILE']) || isset($_SERVER['HTTP_PROFILE'])) {
        return true;
    } elseif (isset($_SERVER['HTTP_USER_AGENT']) && preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])) {
        return true;
    } else {
        return false;
    }
}