3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x = 'a:2:{i:0;O:9:"exception":1:{s:17:"'."\0".'Exception'."\0".'string";i:1;}i:1;R:3;}'; $x = unserialize($x); var_dump(gettype($x[1]));
based on kjS7N
Output for 5.3.18 - 5.6.28, 7.0.20, 7.1.5 - 7.2.0
string(7) "integer"
Output for 7.0.0 - 7.0.6, 7.1.0
Notice: Undefined offset: 1 in /in/t3HI8 on line 6 string(4) "NULL"