TP configuring multiple databases

1、 stay database.php Add

'db2' => [
        //  Database type 
        'type'            => 'mysql',

        //  Server address 
        'hostname'        => '127.0.0.1',
        //  Database name 
        'database'        => 'test',
        //  user name 
        'username'        => 'root',
        //  password 
        'password'        => 'root',
        //  port 
        'hostport'        => '3306',

        //  Connect dsn
        'dsn'             => '',
        //  Database connection parameters 
        'params'          => [],
        //  The database encoding defaults to utf8
        'charset'         => 'utf8',
        //  Database table prefix 
        'prefix'          => 'tn_',
        //  Database debugging mode 
        'debug'           => true,
        //  Database deployment :0  Centralized ( Single server ),1  Distributed ( Master slave server )
        'deploy'          => 0,
        //  Is the database read-write separated   Master slave is effective 
        'rw_separate'     => false,
        //  After the separation of reading and writing   Number of primary servers 
        'master_num'      => 1,
        //  Specify the slave server serial number 
        'slave_no'        => '',
        //  Automatically read the main database data 
        'read_master'     => false,
        //  Whether to strictly check whether the field exists 
        'fields_strict'   => true,
        //  Dataset return type 
        'resultset_type'  => 'array',
        //  Auto write timestamp field 
        'auto_timestamp'  => false,
        //  The default time format after the time field is taken out 
        'datetime_format' => 'Y-m-d H:i:s',
        //  Is it necessary to SQL Performance analysis 
        'sql_explain'     => false,
    ]

2、 The other set is the original one

3、 test

$db2 = \think\Db::connect(config('database.db2'));
$res = $db2->name("user")->find();
 var_dump(\think\Db::table("customer")->find());// The original 
 var_dump($res);die;//db2 Of