3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() { $a = 0; $b = &$a; echo ++$a + $a++; } function bar() { $a = 0; echo ++$a + $a++; } foo(); bar();
based on tvja3
Output for 7.0.0 - 7.2.0
22
Output for 5.3.18 - 5.6.28
32