Online PHP editor | refs for 2uhaE

<?php class FormView implements \ArrayAccess { public array $vars = []; public function offsetExists($offset) { return array_key_exists($offset, $this->vars); } public function offsetGet($offset) { return $this->vars[$offset] ?? null; } public function offsetSet($offset, $value) { $this->vars[$offset] = $value; } public function offsetUnset($offset) { unset($this->vars[$offset]); } } $f = new FormView(); $f->offsetSet('as', 1); var_dump($f->offsetExists('as')); var_dump($f->offsetGet('as')); var_dump($f->as); echo "--\n"; $f = new FormView(); $f->as = 123; var_dump($f->offsetExists('as')); var_dump($f->offsetGet('as')); var_dump($f->as); echo "--\n"; $f = new FormView(); $f->offsetSet('as', null); var_dump($f->offsetExists('as')); var_dump($f->offsetGet('as')); var_dump($f->as);