在__constructor函数PHP中创建新对象

Question

Can I create a new object in __constructor() ? so then I can use the class in current class method.

Let say I have this class

class Config{

  public function configure($data){

  }
}

and I want to use Config in some of Myclass method like this :

include 'Config.php'

class Myclass {
   function __construct(){
     $this->conf = new Config();   //just create one config object
   }

   public function method1($data){
     $this->conf->configure($data); //call the configure method
   }


   public function method2(){
     $this->conf->configure($data); //call again the configure method
   }

}

can I do like that above. or I must create new object frequently like this below:

class Myclass {

  public function method1($data){
    $this->conf = new Config(); //create config object
  }

  public function method2($data){
    $this->conf = new Config(); //create again config object
  }
}

Since I was new in writing my own php oop code,I would like to know which method are efficient when I want to create one object and used it in many function . Thanks!

Answer 1

You could try

protected $objDb;

public function __construct() {
$this->objDb = new Db();
}

Please refer PHP DBconnection Class connection to use in another

See if it helps