3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n\n"; $val = "b"; echo $this->{$val}; // outputs "hi" } } $foo = new foo();
Output for 5.0.0 - 7.1.0
hello hi
Output for 4.3.0 - 4.4.9