环境配置

//域名配置
$env_hosts = [
    'tool_local' => [],//brace.258.com
    'tool_beta' => [],
    'tool_production' => [],
    'tool_plocal' => [],
];

//环境处理
if (!$app->runningInConsole()) {//HTTP形式
   if (empty($_SERVER['HTTP_HOST'])) {
       die('[error] no host');
   }
   foreach ($env_hosts as $env => $hosts) {
       if (in_array($_SERVER['HTTP_HOST'], $hosts)) {
           $app_env = $env;
           break;
       }
   }
} else {//其它形式
   $app_env = $app->detectEnvironment(function () {
       return 'production';
   });
}
if (empty($app_env) || empty($env_hosts[$app_env])) {
   die('[error] no environment');
}
//写入环境配置
Dotenv::setEnvironmentVariable('APP_ENV', $app_env);
Dotenv::setEnvironmentVariable('APP_HOST', $env_hosts[$app_env][0]);
$app->loadEnvironmentFrom(env('APP_ENV') . '.env')
       ->useEnvironmentPath(base_path('env'));