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edited Jun 4, 2014 at 21:52

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PHP (debug build, >= 5.4)

We use refcount of the object in a getter. (So, by the assignment, refcount increases and value changes)

class State {
    public function __get($arg) {
        ob_start();
        debug_zval_dump($this); // e.g. "object(State)#1 (0) refcount(6)"
        return ob_get_clean()[29];
    }
}

$obj = new State;
var_dump($obj->state);
$a = $obj;
var_dump($obj->state);

PHP (debug build, >= 5.4)

We use refcount of the object in a getter. (So, by the assignment, refcount increases and value changes)

class State {
    public function __get($arg) {
        ob_start();
        debug_zval_dump($this);
        return ob_get_clean()[29];
    }
}

$obj = new State;
var_dump($obj->state);
$a = $obj;
var_dump($obj->state);

PHP (debug build, >= 5.4)

We use refcount of the object in a getter. (So, by the assignment, refcount increases and value changes)

class State {
    public function __get($arg) {
        ob_start();
        debug_zval_dump($this); // e.g. "object(State)#1 (0) refcount(6)"
        return ob_get_clean()[29];
    }
}

$obj = new State;
var_dump($obj->state);
$a = $obj;
var_dump($obj->state);

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answered Jun 4, 2014 at 21:42

bwoebi

1.7k
1
10
20

PHP (debug build, >= 5.4)

We use refcount of the object in a getter. (So, by the assignment, refcount increases and value changes)

class State {
    public function __get($arg) {
        ob_start();
        debug_zval_dump($this);
        return ob_get_clean()[29];
    }
}

$obj = new State;
var_dump($obj->state);
$a = $obj;
var_dump($obj->state);