In [1]:
class SimpleClass {
    // property declaration
    public $var = 'a default value';

    public function displayVar() {
        echo $this->var;
    }
}

In [2]:
$simple = new SimpleClass();
$simple->displayVar();


Out[2]:
a default value
Out[2]:
null

In [3]:
SimpleClass::displayVar();


Out[3]:
PHP Deprecated:  Non-static method SimpleClass::displayVar() should not be called statically in /Users/myles/Library/jupyter-php/pkgs/vendor/litipk/jupyter-php/src/Actions/ExecuteAction.php(115) : eval()'d code on line 1

In [ ]: