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run code in 200+ php & hhvm versions
Bugs & Features
<?php trait CastableBehavior { public static function getFromContext($obj) { var_dump($obj, get_object_vars($obj)); $casted = new static; foreach (get_object_vars($obj) as $key => $value) { echo $key, '=>', $value, PHP_EOL; $casted->$key = $value; } return $casted; } } interface UserTypes { const USER = 1; const ADMIN = 2; const MODERATOR = 3; } class User { private $id; private $name; private $type; public function __construct($id, $name, $type) { $this->id = $id; $this->name = $name; $this->type = $type; } public function getID() { return $this->id; } public function getName() { return $this->name; } public function getType() { return $this->type; } } class Admin { use CastableBehavior; private $id; private $name; private $type; } $user = new User(2, 'John', UserTypes::ADMIN); if ($user->getType() === UserTypes::ADMIN) { $admin = Admin::getFromContext($user); } var_dump($admin);
based on BtatY
Output for 5.4.0 - 7.2.0
object(User)#1 (3) { ["id":"User":private]=> int(2) ["name":"User":private]=> string(4) "John" ["type":"User":private]=> int(2) } array(0) { } object(Admin)#2 (3) { ["id":"Admin":private]=> NULL ["name":"Admin":private]=> NULL ["type":"Admin":private]=> NULL }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_STRING in /in/ERF0N on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/ERF0N on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/ERF0N on line 2
Process exited with code 255.