3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'a'; $a = $string++; $b = $string += 1; var_dump($a); var_dump($b);
Output for 7.1.0
Warning: A non-numeric value encountered in /in/Mel2c on line 5 string(1) "a" int(1)
Output for 4.3.0 - 5.6.22, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14
string(1) "a" int(1)