/**
* @param string $property_name
*
* @return mixed|null
*/
function __get($property_name)
{
$value = null;
Util::push_class($this);
if ($this->has_method($property_name)) {
$value = $this->call_method($property_name);
} else {
if ($this->has_object_property($property_name)) {
$value = $this->get_object_value($property_name);
} else {
if ($this->parent->has_object_property($property_name)) {
$value = $this->parent->get_object_value($property_name);
} else {
$class_name = implode(', ', array_unique(Util::class_stack()));
if (empty($class_name)) {
$class_name = get_class($this);
}
Util::log_error("There is no property \"{$property_name}\" in any of these class(es): {$class_name}.");
}
}
}
Util::pop_class();
return $value;
}
