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run code in 150+ php & hhvm versions
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<?php abstract class Pisa { protected $_object = 'Pisa'; } class Child1 extends Pisa { function __construct() { $e = new Child2(); var_dump($e->_object); } } class Child2 extends Pisa { } new Child1();
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(4) "Pisa"
Output for 5.0.0 - 5.1.6
Fatal error: Cannot access protected property Child2::$_object in /in/8ULX5 on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/8ULX5 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/8ULX5 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8ULX5 on line 3
Process exited with code 255.