Codeigniter 4、如何显示数据库名和表前缀？

Question

So far in codeigniter 3 we can get database name and table prefix (as mentioned in config/database.php ) from the below code lines:

echo $this->db->database;
echo $this->db->dbprefix('emp_table');

Now how can we call these values in Codeigniter 4?

Answer 1

I think this is what you are looking for

$db = \Config\Database::connect();
$Database = $db->database();
$DBPrefix = $db->getPrefix();

I hope this work for you

Answer 2

There are some changes in CI4, Inside controller's constructor,

write:

$db = \Config\Database::connect();
define('production',$db->database);

And inside your function call it:

echo(production);

Never call database as a function () in CI4, avoid this () and just use the object instead: database without ()

Answer 3

$this->db->database This will work. its Access Modifiers is protected . So this property can be accessed within the class and by classes derived from that class. So to get globally use a public function as

public function get_db_name(){
   return $this->db->database;
}