php framework - thinkPHP M model table prefix: When to use $tablePrefix and when to use 'DB_PREFIX'?

I know that when creating an M model, there are two ways to define the table prefix,
One is in $tablePrefix and the other is in $connection,

Why do I use

here?

<code>protected $connection = array
    (
        'DB_TYPE' => 'mysql',    //数据库类型
        'DB_USER' => 'root',    //用户名
        'DB_PWD'  => '',    //密码
        'DB_HOST' => 'localhost',    //域名
        'DB_PORT' => '3306',    //??
        'DB_NAME' => 'minute1',    //库名
        'DB_CHARSET' => 'UTF8',    //编码
        'DB_PREFIX' => 'minute1_'    //★★★★★★★★★★★★数据库表前缀minute1_
    );</code>

No, it’s better to use protected $tablePrefix="minute1_". When should I use which one?

Reply content:

I know that when creating an M model, there are two ways to define the table prefix,
One is in $tablePrefix and the other is in $connection,

Why do I use

here?

<code>protected $connection = array
    (
        'DB_TYPE' => 'mysql',    //数据库类型
        'DB_USER' => 'root',    //用户名
        'DB_PWD'  => '',    //密码
        'DB_HOST' => 'localhost',    //域名
        'DB_PORT' => '3306',    //??
        'DB_NAME' => 'minute1',    //库名
        'DB_CHARSET' => 'UTF8',    //编码
        'DB_PREFIX' => 'minute1_'    //★★★★★★★★★★★★数据库表前缀minute1_
    );</code>

No, it’s better to use protected $tablePrefix="minute1_". When should I use which one?

$tablePrefix is ​​defined in the Model, and its priority is higher than that in the configuration file. Generally speaking, the initial table prefixes in your project are all "a_", which you defined in the configuration file

<code>'DB_PREFIX'=>'a_'</code>

But a b_temp table is added later. If it is not processed when instantiating temp, the system will look for a_temp. This table does not exist. At this time, you need to define $tablePrefix='b_' in the Temp model. ;