3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class TestClass{ public $a = []; public function __set($name, $value) { $a[$name] = $value; } public function __get($name) { return $a[$name]; } } $test = new TestClass(); $test->a = new TestClass(); var_dump(isset($test->a));
based on Kv0UD
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/WOagR on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/WOagR on line 4
Process exited with code 255.
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/WOagR on line 4
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_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/WOagR on line 4
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/WOagR on line 4
Process exited with code 255.