PHP : Class Extends

Question

I have made some example code to explain my question:

class Core {
   public $test = null;
   public function __construct(){
       $this->test = "hi";
   }
}

$data = new Core;

class Extension extends Core {
    public function __construct(){
        $this->test = "hello";
    }
}

$data->ext = new Extension;

echo $data->test . "<br />";
echo $data->ext->test;

Which outputs as:

hi
hello

My question is hard to explain but I am just wondering if there was a way to overwrite the $test variable in the parent class within the child class so:

echo $this->test; would output "hello" since it changed in the child class.

Is there a way of doing this or can the child not access/change the parent variables?

Answer 1

Use a static property for your use case.

Check here http://php.net/manual/en/language.oop5.static.php , the second example should help you