通过PHP类作为参数？

Question

How can I pass the current class as a parameter? Example:

class Example 
{
    public function test() {
        $class = new Class2(I want to pass the Example class instance here)
    }
}

class Class2 
{
    public function __construct(Example $example) {
    }
}

Answer 1

class Example 
{
    public function test() {
        $class = new Class2(new static());
    }
}

Answer 2

you can pass it as $this, new self() or new static(). and you will get the same result.

class Example 
{
    public $name = "test";

    public function test() {
        return $class = new Class2($this);
    }
}

class Class2 
{
    private $example = null;
    public function __construct(Example $example) {
        $this->example = $example;
    }

    public function testMe() {
        echo $this->example->name;
    }

    public function setExampleName($name) {
        $this->example->name = $name;
    }
}

$e = new Example();

$e->test()->testMe();

the result:

test

Answer 3

send $this in as the parameter during object creation. Because $this represent the current class object Which Example here

class Example { 
  public function test() {
   $class = new Class2($this);
  } 
 }