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<?php class Foo { public function __get($name) { echo __METHOD__ . "($name)" . PHP_EOL; switch ($name) { case 'foo': return new Foo(); case 'bar': return 'bar'; default: return null; } } public function __isset($name) { echo __METHOD__ . "($name)" . PHP_EOL; return $name === 'bar'; } } $foo = new Foo(); echo (empty($foo->foo->bar) ? 'is empty' : 'is not empty') . PHP_EOL;
Output for 7.0.6 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.21, 7.4.0 - 7.4.10, 8.0.0alpha1 - beta3
Foo::__isset(foo) is empty
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.5
Foo::__get(foo) Foo::__isset(bar) Foo::__get(bar) is not empty
Output for 5.0.2 - 5.0.5
Foo::__get(foo) is empty
Output for 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/c2Xqr on line 4 Foo::__get(foo)PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/c2Xqr on line 19 is emptyPHP_EOL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/c2Xqr on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/c2Xqr on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/c2Xqr on line 3
Process exited with code 255.