curl https://packages.microsoft.com/config/rhel/7/prod.repo > /etc/yum.repos.d/mssqlrelease.repo 

yum install msodbcsql mssql-tools unixODBC-devel 

wget http://pecl.php.net/get/pdo_sqlsrv-5.8.0.tgz 

tar -zxvf pdo_sqlsrv-5.8.0.tgz
cd pdo_sqlsrv-5.8.0 

/www/server/php/74/bin/phpize
./configure --with-php-config=/www/server/php/74/bin/php-config
make && make install 

extension = pdo_sqlsrv.so

    'Sqlsrv'=>[
        //本地
        'type'            => 'sqlsrv',
        // 服务器地址
        'hostname'        => '',
        // 数据库名
        'database'        => '',
        // 用户名
        'username'        => '',
        // 密码
        'password'        => '',
        // 端口
        // 'hostport'        => '1433',
    ],  

$result = Db::connect(config('Sqlsrv'))->table('T_W_Inventory')->where('id',2)->find();