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run code in 150+ php & hhvm versions
Bugs & Features
<?php abstract class Test { protected $pro = 9; public function __construct($x) { } } class TestMe extends Test { protected $pro = 50; } class TestProxy extends TestMe { protected $a; public function __construct($x, $a = null) { echo $a->pro; } } $a = new TestMe(''); $p = new TestProxy('', $a);
Output for 5.0.5 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
50
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.4
Fatal error: Cannot access protected property TestMe::$pro in /in/sAENN on line 18
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/sAENN on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_CLASS in /in/sAENN on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/sAENN on line 3
Process exited with code 255.