3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { private $info = []; function __set($k, $v){ $this->info[$k] = $v; } function &__get($k){ $n = null; return $this->info[$k] ?: $n; } } $bar = new Foo(); $bar->foo = []; var_dump($bar->foo); $bar->foo[] = 'fool'; var_dump($bar->foo);
based on sUZSo
Output for 7.1.0
Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL Notice: Only variable references should be returned by reference in /in/t36bd on line 11 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.0.14
Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL Notice: Only variable references should be returned by reference in /in/t36bd on line 11 Notice: Indirect modification of overloaded property Foo::$foo has no effect in /in/t36bd on line 18 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL
Output for hhvm-3.10.0 - 3.12.0
NULL NULL
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/t36bd on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/t36bd on line 5
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/t36bd on line 5
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/t36bd on line 5
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/t36bd on line 5
Process exited with code 255.