3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class test { function __construct() { $this->Id='true test'; $el = 'Id'; echo $this->$el; } } $t = new test();
Output for 5.0.0 - 7.1.0
true test
Output for 4.3.0 - 4.4.9