如何在方法中调用方法？

I would like to call an other method in from a method in my class, but i don't know how :/

I have an array: ['header', 'navbar', null, 'footer']

I would like to call methods related to string in array

public function Render(){
  foreach($array as $v)
    // HERE CALL METHOD ($v) IN MY CLASS ex return: $this->header(), $this->navbar()
}

private function header(){
  //EXEMPLE FESGRDGTFDTHTs
}
private function navbar(){
   //EXEMPLE FESGRDGTFDTHTs
}

[ETC]

Ty for community

Just check if provided method exists (method_exists), if so then call it:

public function Render(){
    foreach($array as $v)
      if (method_exists($this, $v)) {
        $this->$v();
      }
    }
}

Or you can use call_user_func function

public function Render() {
    foreach($array as $v) {
        if (method_exists($this, $v)) {
            call_user_func(array($this, $v));
        }
    }
}

In PHP OOP, you can call a function with $this->functionName($etc). If you have basic knowledge with other programming language (espacially OOP), $this-> is like . (dot) operator.