We have this class

class Fruit {
  public $name;
  public $color;

  function set_name($name) {
    $this->name = $name;

    //ISSUE:
    //We are using a PHP library that accepts a callback function as parameter
    new BlaBlaLibrary($this->some_callback);
            
  }

  function some_callback() {
    ......
  }
}

$f = new Fruit();
$f->set_name("apple");

As you can see, we are using a PHP library that is accepting a callback function as parameter. We want to do this but doesnt work:

new BlaBlaLibrary($this->some_callback);

This one works just fine though:

new BlaBlaLibrary(function(){
    ....
});

Question: How can we pass the function of the class and not an anonymous function?

Thanks in advance.