3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->{$val}; // outputs "hello" echo "\n\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n\n"; $echo->val; } } $foo = new foo();
Output for 7.2.0
hello hi Notice: Undefined variable: echo in /in/R2PJj on line 18 Notice: Trying to get property 'val' of non-object in /in/R2PJj on line 18
Output for 5.0.4 - 7.1.10
hello hi Notice: Undefined variable: echo in /in/R2PJj on line 18 Notice: Trying to get property of non-object in /in/R2PJj on line 18
Output for 5.0.0 - 5.0.3
hello hi Notice: Undefined variable: echo in /in/R2PJj on line 18 Notice: Trying to get property of non-object in /in/R2PJj on line 18
Output for 4.3.0 - 4.4.9