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run code in 150+ php & hhvm versions
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<?php abstract class first { protected $someArray = array(); } class second extends first { protected $someValue = null; protected $someArray = array(); public function __construct($someValue) { $this->someValue = $someValue; } } $objFirst = new second('123'); $objSecond = new second('321'); var_dump ($objFirst == $objSecond); var_dump($objFirst); var_dump ($objFirst == $objSecond);
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false) object(second)#1 (2) { ["someValue":protected]=> string(3) "123" ["someArray":protected]=> array(0) { } } bool(false)
Output for 5.0.0 - 5.2.17
bool(false) object(second)#1 (2) { ["someValue:protected"]=> string(3) "123" ["someArray:protected"]=> array(0) { } } bool(false)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/OUCmR 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/OUCmR on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OUCmR on line 3
Process exited with code 255.