3v4l.org

run code in 300+ PHP versions simultaneously
<?php phpversion() <= "7.0.0" or die(); $a='apple'; $b='a'; $c='b'; $d='c'; echo "$$$$d\n"; // $$$c $obj = new StdClass; $obj->apple = 'sauce'; echo $obj->$$$$d; // sauce
Output for 7.0.1 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.6
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0
$$$c sauce
preferences:
82.51 ms | 402 KiB | 47 Q