<?php class Coalescing { protected $attributes = [ 'attribute1' => 'value1', ]; public function __isset() { return array_key_exists($name, $this->attributes); } public function __get($name) { print "GET\n"; if (array_key_exists($name, $this->attributes)) { return $this->attributes[$name]; } trigger_error("Property $name does not exist"); return null; } } $coal = new Coalescing(); var_dump($coal->attribute1 ?? 'default'); //GET //string(6) "value1" var_dump($coal->attribute2 ?? 'default'); //GET // It should dump 'default' here. Instead, the error of __get() is triggered
You have javascript disabled. You will not be able to edit any code.