3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class X { var $value; function get() { return null !== $this->value ? $this->value : ($this->value = $this->getLongCalculation()); } function getLongCalculation() { sleep(3); return 5; } } $x = new X; var_dump($x->get()); var_dump($x->get());
Output for 4.3.0 - 4.4.9, 5.1.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0

Process exited with code 137.
Output for 5.0.0 - 5.1.2
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/erkvJ on line 4
Process exited with code 137.