find out a class variable's defined scope (from within the class) - php

Question

Given:
class myClass extends \Phalcon\Mvc\Model
{
public $a;
protected $b;
private $c;
}
How can I test that $a is public, $b is protected, and $c is private from within myClass?

Answer 1

You can use ReflectionProperty -
class myClass
{
public $a;
protected $b;
private $c;
}
$obj = new myClass();
$reflect_a = new ReflectionProperty(get_class($obj), 'a');
$reflect_c = new ReflectionProperty(get_class($obj), 'c');
var_dump($reflect_a->isProtected());
var_dump($reflect_c->isPrivate());
Depending on the result you can hide or show them.

Answer 2

For your needs you can use use Models Meta-Data. You can get the attributes of the model within the model:
<?php
/**
* Posts Model
*
*/
class Posts extends \Phalcon\Mvc\Model
{
public $id;
public $users_id;
public $categories_id;
public $title;
public $slug;
public $content;
public $number_views;
public $number_replies;
public $votes_up;
public $votes_down;
public $sticked;
public $modified_at;
public $created_at;
public $edited_at;
public $status;
public $locked;
public $deleted;
public $accepted_answer;
private $foo_bar;
}
Somewhere in the controller:
var_dump($this->modelsMetadata->getAttributes(new Posts()));die;
Output:
array (size=18)
0 => string 'id' (length=2)
1 => string 'users_id' (length=8)
2 => string 'categories_id' (length=13)
3 => string 'title' (length=5)
4 => string 'slug' (length=4)
5 => string 'content' (length=7)
6 => string 'number_views' (length=12)
7 => string 'number_replies' (length=14)
8 => string 'votes_up' (length=8)
9 => string 'votes_down' (length=10)
10 => string 'sticked' (length=7)
11 => string 'created_at' (length=10)
12 => string 'modified_at' (length=11)
13 => string 'edited_at' (length=9)
14 => string 'status' (length=6)
15 => string 'locked' (length=6)
16 => string 'deleted' (length=7)
17 => string 'accepted_answer' (length=15)
Also you can create an model's method:
public function getAttributes()
{
$metaData = $this->getModelsMetaData();
return $metaData->getAttributes($this);
}
\Phalcon\Mvc\Model\MetaData::getAttributes Returns table attributes names - fields of table.
Also PHP's get_class_vars() returns an array of all properties visible in the current scope. In your case it should return all public properties.